@@ -1,281 +1,282 | |||
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1 | 1 | #include <stdlib.h> |
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2 | 2 | #include <errno.h> |
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3 | 3 | #include <string.h> |
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4 | 4 | #include <sys/stat.h> |
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5 | 5 | #include <sys/types.h> |
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6 | 6 | #include <sys/times.h> |
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7 | 7 | #include <streamdevices.h> |
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8 | 8 | #include <string.h> |
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9 | 9 | #include <stdio.h> |
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10 | 10 | #include <gpio.h> |
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11 | 11 | #include <uart.h> |
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12 | 12 | #include <stdint.h> |
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13 | 13 | #include <bsp.h> |
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14 | #include <core.h> | |
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14 | 15 | |
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15 | 16 | #undef errno |
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16 | 17 | |
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17 | 18 | |
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18 | 19 | #ifdef __cplusplus |
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19 | 20 | extern "C" { |
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20 | 21 | #endif |
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21 | 22 | extern int errno; |
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22 | 23 | extern int32_t __max_opened_files__; |
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23 | 24 | extern streamdevice* __opnfiles__[]; |
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24 | 25 | extern int32_t* __fs_root__; |
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25 | 26 | extern int32_t __fs_root_size__; |
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26 | 27 | |
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27 | 28 | char *__env[1] = { 0 }; |
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28 | 29 | char **environ = __env; |
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29 | 30 | |
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30 | 31 | int _exit() |
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31 | 32 | { |
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32 | 33 | while(1) |
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33 | 34 | { |
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34 | 35 | delay_100us(10000); |
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35 | 36 | gpioset(LED2); |
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36 | 37 | delay_100us(10000); |
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37 | 38 | gpioclr(LED2); |
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38 | 39 | } |
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39 | 40 | } |
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40 | 41 | |
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41 | 42 | int _close(int file) |
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42 | 43 | { |
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43 | 44 | if(file<__max_opened_files__ && __opnfiles__[file]!=NULL) |
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44 | 45 | { |
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45 | 46 | return __opnfiles__[file]->ops->close( __opnfiles__[file]); |
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46 | 47 | } |
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47 | 48 | return 0; |
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48 | 49 | } |
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49 | 50 | |
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50 | 51 | |
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51 | 52 | int _write(int file, char *ptr, int len) |
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52 | 53 | { |
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53 | 54 | if(file<__max_opened_files__ && __opnfiles__[file]!=NULL) |
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54 | 55 | { |
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55 | 56 | if(__opnfiles__[file]->ops->write(__opnfiles__[file],ptr,1,len)) return len; |
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56 | 57 | } |
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57 | 58 | return len; |
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58 | 59 | } |
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59 | 60 | |
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60 | 61 | int _execve(char *name, char **argv, char **env) { |
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61 | 62 | errno = ENOMEM; |
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62 | 63 | return -1; |
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63 | 64 | } |
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64 | 65 | |
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65 | 66 | |
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66 | 67 | int _fork(void) { |
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67 | 68 | errno = EAGAIN; |
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68 | 69 | return -1; |
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69 | 70 | } |
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70 | 71 | |
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71 | 72 | int _fstat(int file, struct stat *st) { |
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72 | 73 | st->st_mode = S_IFCHR; |
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73 | 74 | return 0; |
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74 | 75 | } |
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75 | 76 | |
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76 | 77 | |
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77 | 78 | int _getpid(void) { |
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78 | 79 | return 1; |
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79 | 80 | } |
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80 | 81 | |
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81 | 82 | |
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82 | 83 | int _isatty(int file) { |
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83 | 84 | return 1; |
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84 | 85 | } |
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85 | 86 | |
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86 | 87 | |
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87 | 88 | int _kill(int pid, int sig) { |
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88 | 89 | errno = EINVAL; |
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89 | 90 | return -1; |
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90 | 91 | } |
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91 | 92 | |
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92 | 93 | |
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93 | 94 | int _link(char *old, char *_new) { |
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94 | 95 | errno = EMLINK; |
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95 | 96 | return -1; |
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96 | 97 | } |
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97 | 98 | |
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98 | 99 | |
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99 | 100 | int _lseek(int file, int ptr, int dir) { |
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100 | 101 | return 0; |
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101 | 102 | } |
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102 | 103 | |
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103 | 104 | #include <gpio.h> |
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104 | 105 | |
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105 | 106 | int _open(const char *name, int flags, int mode) |
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106 | 107 | { |
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107 | 108 | if(!strncmp("UART", name, 4) && ((name[4] & 0x30)==0x30)) |
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108 | 109 | { |
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109 | 110 | //uart_t* uart1 = malloc(sizeof(uart_t)); |
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110 | 111 | streamdevice* fd1 = malloc(sizeof(streamdevice)); |
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111 | 112 | uart_t uart=uartopen((name[4] & 0xF)-1); |
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112 | 113 | if(uart!=-1); |
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113 | 114 | { |
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114 | 115 | uartmkstreamdev(uart,fd1); |
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115 | 116 | int i=2; |
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116 | 117 | while((i<__max_opened_files__) && (__opnfiles__[i]!=NULL))i++; |
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117 | 118 | if(i!=__max_opened_files__) |
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118 | 119 | { |
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119 | 120 | __opnfiles__[i] = fd1; |
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120 | 121 | return i; |
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121 | 122 | } |
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122 | 123 | else printf("Too much files opened\n\r"); |
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123 | 124 | } |
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124 | 125 | } |
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125 | 126 | return -1; |
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126 | 127 | } |
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127 | 128 | |
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128 | 129 | int _read(int file, char *ptr, int len) { |
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129 | 130 | if(file<__max_opened_files__ && __opnfiles__[file]!=NULL) |
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130 | 131 | { |
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131 | 132 | if(__opnfiles__[file]->ops->read(__opnfiles__[file],ptr,1,len)) return len; |
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132 | 133 | } |
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133 | 134 | return 0; |
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134 | 135 | } |
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135 | 136 | |
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136 | 137 | |
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137 | 138 | |
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138 | 139 | caddr_t _sbrk(int incr) { |
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139 | 140 | register char * stack_ptr __asm__ ("sp"); |
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140 | 141 | extern char end; /* Defined by the linker */ |
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141 | 142 | static char *heap_end; |
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142 | 143 | char *prev_heap_end; |
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143 | 144 | if (heap_end == 0) { |
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144 | 145 | heap_end = &end; |
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145 | 146 | } |
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146 | 147 | prev_heap_end = heap_end; |
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147 | 148 | if (heap_end + incr > stack_ptr) { |
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148 | 149 | printf("Heap and stack collision\n"); |
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149 | 150 | //abort (); |
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150 | 151 | while(1) |
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151 | 152 | { |
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152 | 153 | delay_100us(10000); |
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153 | 154 | gpioset(LED2); |
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154 | 155 | delay_100us(10000); |
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155 | 156 | gpioclr(LED2); |
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156 | 157 | } |
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157 | 158 | } |
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158 | 159 | heap_end += incr; |
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159 | 160 | return (caddr_t) prev_heap_end; |
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160 | 161 | } |
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161 | 162 | |
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162 | 163 | |
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163 | 164 | |
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164 | 165 | int _stat(char *file, struct stat *st) { |
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165 | 166 | st->st_mode = S_IFCHR; |
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166 | 167 | return 0; |
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167 | 168 | } |
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168 | 169 | |
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169 | 170 | |
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170 | 171 | int _times(struct tms *buf) { |
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171 | 172 | return -1; |
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172 | 173 | } |
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173 | 174 | |
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174 | 175 | |
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175 | 176 | int _unlink(char *name) { |
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176 | 177 | errno = ENOENT; |
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177 | 178 | return -1; |
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178 | 179 | } |
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179 | 180 | |
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180 | 181 | int _wait(int *status) { |
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181 | 182 | errno = ECHILD; |
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182 | 183 | return -1; |
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183 | 184 | } |
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184 | 185 | |
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185 | 186 | |
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186 | 187 | int _read_r (struct _reent *r, int file, char * ptr, int len) |
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187 | 188 | { |
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188 | 189 | r = r; |
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189 | 190 | file = file; |
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190 | 191 | ptr = ptr; |
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191 | 192 | len = len; |
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192 | 193 | _read(file,ptr,len); |
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193 | 194 | errno = EINVAL; |
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194 | 195 | return -1; |
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195 | 196 | } |
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196 | 197 | |
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197 | 198 | /***************************************************************************/ |
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198 | 199 | |
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199 | 200 | int _lseek_r (struct _reent *r, int file, int ptr, int dir) |
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200 | 201 | { |
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201 | 202 | r = r; |
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202 | 203 | file = file; |
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203 | 204 | ptr = ptr; |
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204 | 205 | dir = dir; |
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205 | 206 | |
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206 | 207 | return 0; |
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207 | 208 | } |
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208 | 209 | |
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209 | 210 | /***************************************************************************/ |
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210 | 211 | |
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211 | 212 | int _write_r (struct _reent *r, int file, char * ptr, int len) |
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212 | 213 | { |
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213 | 214 | return _write(file, ptr, len); |
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214 | 215 | } |
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215 | 216 | |
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216 | 217 | /***************************************************************************/ |
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217 | 218 | |
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218 | 219 | int _close_r (struct _reent *r, int file) |
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219 | 220 | { |
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220 | 221 | return 0; |
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221 | 222 | } |
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222 | 223 | |
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223 | 224 | /***************************************************************************/ |
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224 | 225 | |
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225 | 226 | caddr_t _sbrk_r (struct _reent *r, int incr) |
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226 | 227 | { |
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227 | 228 | register char * stack_ptr __asm__ ("sp"); |
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228 | 229 | extern char end; /* Defined by the linker */ |
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229 | 230 | static char *heap_end; |
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230 | 231 | char *prev_heap_end; |
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231 | 232 | if (heap_end == 0) { |
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232 | 233 | heap_end = &end; |
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233 | 234 | } |
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234 | 235 | prev_heap_end = heap_end; |
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235 | 236 | if (heap_end + incr > stack_ptr) { |
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236 | 237 | printf( "Heap and stack collision\n"); |
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237 | 238 | //abort (); |
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238 | 239 | while(1) |
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239 | 240 | { |
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240 | 241 | delay_100us(10000); |
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241 | 242 | gpioset(LED2); |
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242 | 243 | delay_100us(10000); |
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243 | 244 | gpioclr(LED2); |
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244 | 245 | } |
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245 | 246 | } |
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246 | 247 | heap_end += incr; |
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247 | 248 | return (caddr_t) prev_heap_end; |
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248 | 249 | } |
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249 | 250 | |
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250 | 251 | /***************************************************************************/ |
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251 | 252 | |
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252 | 253 | int _fstat_r (struct _reent *r, int file, struct stat * st) |
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253 | 254 | { |
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254 | 255 | r = r; |
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255 | 256 | file = file; |
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256 | 257 | |
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257 | 258 | memset (st, 0, sizeof (* st)); |
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258 | 259 | st->st_mode = S_IFCHR; |
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259 | 260 | return 0; |
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260 | 261 | } |
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261 | 262 | |
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262 | 263 | /***************************************************************************/ |
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263 | 264 | int _open_r(struct _reent *r,const char *name, int flags, int mode) |
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264 | 265 | { |
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265 | 266 | return _open(name, flags, mode); |
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266 | 267 | } |
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267 | 268 | |
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268 | 269 | int _isatty_r(struct _reent *r, int fd) |
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269 | 270 | { |
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270 | 271 | r = r; |
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271 | 272 | fd = fd; |
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272 | 273 | |
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273 | 274 | return 1; |
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274 | 275 | } |
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275 | 276 | |
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276 | 277 | |
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277 | 278 | #ifdef __cplusplus |
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278 | 279 | } |
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279 | 280 | #endif |
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280 | 281 | |
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281 | 282 |
@@ -1,387 +1,388 | |||
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1 | 1 | /*------------------------------------------------------------------------------ |
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2 | 2 | -- This file is a part of the libuc, microcontroler library |
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3 | 3 | -- Copyright (C) 2012, Alexis Jeandet |
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4 | 4 | -- |
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5 | 5 | -- This program is free software; you can redistribute it and/or modify |
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6 | 6 | -- it under the terms of the GNU General Public License as published by |
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7 | 7 | -- the Free Software Foundation; either version 3 of the License, or |
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8 | 8 | -- (at your option) any later version. |
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9 | 9 | -- |
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10 | 10 | -- This program is distributed in the hope that it will be useful, |
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11 | 11 | -- but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | 12 | -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 | 13 | -- GNU General Public License for more details. |
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14 | 14 | -- |
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15 | 15 | -- You should have received a copy of the GNU General Public License |
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16 | 16 | -- along with this program; if not, write to the Free Software |
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17 | 17 | -- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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18 | 18 | ------------------------------------------------------------------------------- |
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19 | 19 | -- Author : Alexis Jeandet |
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20 | 20 | -- Mail : alexis.jeandet@member.fsf.org |
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21 | 21 | -------------------------------------------------------------------------------*/ |
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22 | 22 | |
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23 | 23 | #include <i2c.h> |
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24 | 24 | #include <stm32f4xx_usart.h> |
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25 | 25 | #include <stm32f4xx_rcc.h> |
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26 | 26 | #include <stm32f4xx_gpio.h> |
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27 | 27 | #include <gpio.h> |
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28 | 28 | #include <core.h> |
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29 | 29 | #include <stdio.h> |
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30 | 30 | |
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31 | 31 | #define GPIOGETPORT(gpio) ((GPIO_TypeDef*)(((((uint32_t)gpio) & (uint32_t)0x0000FF00)*(uint32_t)4) + (uint32_t)GPIOA)) |
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32 | 32 | #define GPIOPORTNUM(gpio) (((uint32_t)(gpio) & (uint32_t)0x0000FF00)>>(uint32_t)8) |
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33 | 33 | |
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34 | 34 | int i2ctimeout=1000*1000; |
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35 | 35 | |
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36 | 36 | I2C_TypeDef* _i2c_dev_table[3]={I2C1,I2C2,I2C3}; |
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37 | 37 | |
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38 | 38 | i2c_t i2copen(int count) |
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39 | 39 | { |
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40 | 40 | #define _INIT_DEV(_RCC_) \ |
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41 | 41 | RCC_APB1PeriphClockCmd(_RCC_, ENABLE); \ |
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42 | 42 | RCC_APB1PeriphResetCmd(_RCC_, ENABLE); \ |
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43 | RCC_APB1PeriphResetCmd(_RCC_, DISABLE); | |
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43 | RCC_APB1PeriphResetCmd(_RCC_, DISABLE); \ | |
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44 | RCC_APB1PeriphClockCmd(_RCC_, ENABLE); | |
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44 | 45 | |
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45 | 46 | switch(count) |
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46 | 47 | { |
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47 | 48 | case i2c1: |
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48 | 49 | _INIT_DEV(RCC_APB1Periph_I2C1); |
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49 | 50 | return i2c1; |
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50 | 51 | break; |
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51 | 52 | case i2c2: |
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52 | 53 | _INIT_DEV(RCC_APB1Periph_I2C2); |
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53 | 54 | return i2c2; |
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54 | 55 | break; |
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55 | 56 | case i2c3: |
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56 | 57 | _INIT_DEV(RCC_APB1Periph_I2C3); |
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57 | 58 | return i2c3; |
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58 | 59 | break; |
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59 | 60 | default: |
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60 | 61 | break; |
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61 | 62 | } |
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62 | 63 | return -1; |
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63 | 64 | } |
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64 | 65 | |
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65 | 66 | i2c_t i2copenandconfig(int count,uint32_t cfg,uint32_t speed,uint32_t SDA,uint32_t SCL) |
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66 | 67 | { |
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67 | 68 | i2c_t dev = i2copen(count); |
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68 | 69 | if(dev!=-1) |
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69 | 70 | { |
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70 | 71 | i2cclose(dev); |
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71 | 72 | i2csetpins(dev,SDA,SCL); |
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72 | 73 | i2copen(count); |
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73 | 74 | i2csetspeed(dev,speed); |
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74 | 75 | i2cenable(count); |
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75 | 76 | } |
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76 | 77 | return dev; |
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77 | 78 | } |
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78 | 79 | |
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79 | 80 | int i2cclose(i2c_t dev) |
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80 | 81 | { |
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81 | 82 | switch(dev) |
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82 | 83 | { |
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83 | 84 | case i2c1: |
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84 | 85 | RCC_APB1PeriphResetCmd(RCC_APB1Periph_I2C1, ENABLE); |
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85 | 86 | break; |
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86 | 87 | case i2c2: |
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87 | 88 | RCC_APB1PeriphResetCmd(RCC_APB1Periph_I2C2, ENABLE); |
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88 | 89 | break; |
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89 | 90 | case i2c3: |
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90 | 91 | RCC_APB1PeriphResetCmd(RCC_APB1Periph_I2C3, ENABLE); |
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91 | 92 | break; |
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92 | 93 | default: |
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93 | 94 | break; |
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94 | 95 | } |
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95 | 96 | return 1; |
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96 | 97 | } |
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97 | 98 | |
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98 | 99 | int i2csetpins(i2c_t dev, uint32_t SDA, uint32_t SCL) |
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99 | 100 | { |
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100 | 101 | if((dev<i2c4)&&(dev>=i2c1)) |
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101 | 102 | { |
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102 | 103 | gpio_t SDApin,SCLpin; |
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103 | 104 | SDApin = gpioopen(SDA); |
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104 | 105 | SCLpin = gpioopen(SCL); |
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105 | 106 | SDApin |= gpiolowspeed | gpioaf | gpioopendraintype | gpionopulltype; |
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106 | 107 | SCLpin |= gpiolowspeed | gpiooutdir | gpioopendraintype | gpionopulltype; |
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107 | 108 | gpiosetconfig(&SCLpin); |
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108 | 109 | for(int i=0;i<32;i++) |
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109 | 110 | { |
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110 | 111 | gpioclr(SCLpin); |
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111 | 112 | for(int l=0;l<200;l++) |
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112 | 113 | {__asm__("nop");} |
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113 | 114 | gpioset(SCLpin); |
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114 | 115 | for(int l=0;l<200;l++) |
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115 | 116 | {__asm__("nop");} |
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116 | 117 | } |
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117 | 118 | SCLpin = gpioopen(SCL); |
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118 | 119 | SCLpin |= gpiolowspeed | gpioaf | gpioopendraintype | gpionopulltype; |
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119 | 120 | gpiosetconfig(&SDApin); |
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120 | 121 | gpiosetconfig(&SCLpin); |
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121 | 122 | uint8_t gpioAFi2cx = GPIO_AF_I2C1; |
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122 | 123 | switch(dev) |
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123 | 124 | { |
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124 | 125 | case i2c1: |
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125 | 126 | gpioAFi2cx = GPIO_AF_I2C1; |
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126 | 127 | break; |
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127 | 128 | case i2c2: |
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128 | 129 | gpioAFi2cx = GPIO_AF_I2C2; |
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129 | 130 | break; |
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130 | 131 | case i2c3: |
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131 | 132 | gpioAFi2cx = GPIO_AF_I2C3; |
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132 | 133 | break; |
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133 | 134 | default: |
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134 | 135 | break; |
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135 | 136 | } |
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136 | 137 | GPIO_PinAFConfig(GPIOGETPORT(SDApin), (uint8_t)(SDApin & 0xF), gpioAFi2cx); |
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137 | 138 | GPIO_PinAFConfig(GPIOGETPORT(SCLpin), (uint8_t)(SCLpin & 0xF), gpioAFi2cx); |
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138 | 139 | return 0; |
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139 | 140 | } |
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140 | 141 | return -1; |
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141 | 142 | } |
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142 | 143 | |
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143 | 144 | int i2cenable(i2c_t dev) |
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144 | 145 | { |
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145 | 146 | if((dev<i2c4)&&(dev>=i2c1)) |
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146 | 147 | { |
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147 | 148 | I2C_TypeDef* _dev_ = _i2c_dev_table[(int)dev]; |
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148 | 149 | _dev_->CR1 |=1 ; |
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149 | 150 | return 0; |
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150 | 151 | } |
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151 | 152 | return -1; |
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152 | 153 | } |
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153 | 154 | |
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154 | 155 | int i2cdisable(i2c_t dev) |
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155 | 156 | { |
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156 | 157 | if((dev<i2c4)&&(dev>=i2c1)) |
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157 | 158 | { |
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158 | 159 | I2C_TypeDef* _dev_ = _i2c_dev_table[(int)dev]; |
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159 | 160 | _dev_->CR1 &= ~1; |
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160 | 161 | return 0; |
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161 | 162 | } |
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162 | 163 | return -1; |
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163 | 164 | } |
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164 | 165 | |
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165 | 166 | |
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166 | 167 | int i2csetspeed(i2c_t dev,uint32_t speed) |
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167 | 168 | { |
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168 | 169 | if((dev<i2c4)&&(dev>=i2c1)) |
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169 | 170 | { |
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170 | 171 | I2C_TypeDef* _dev_ = _i2c_dev_table[(int)dev]; |
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171 | 172 | int32_t APB1Freq=getAPB1Freq()/1000000; |
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172 | 173 | if((APB1Freq>1)&&(APB1Freq<43)) |
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173 | 174 | { |
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174 | 175 | |
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175 | 176 | uint16_t tmpreg=_dev_->CR2; |
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176 | 177 | tmpreg &= ~(0x1f); |
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177 | 178 | tmpreg |= APB1Freq; |
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178 | 179 | _dev_->CR2=tmpreg; |
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179 | 180 | i2cdisable(dev); |
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180 | 181 | tmpreg=_dev_->CCR; |
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181 | 182 | APB1Freq=getAPB1Freq(); |
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182 | 183 | if(speed>100000) //100kHz= standard mode, 400kHz= fast mode |
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183 | 184 | { |
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184 | 185 | if(speed<=400000) |
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185 | 186 | { |
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186 | 187 | tmpreg |= 1<<15; |
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187 | 188 | tmpreg &= ~(1<<14); |
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188 | 189 | tmpreg &= ~(0xfff); |
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189 | 190 | tmpreg |= 0xfff & (APB1Freq/(3*speed)); |
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190 | 191 | } |
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191 | 192 | } |
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192 | 193 | else |
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193 | 194 | { |
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194 | 195 | tmpreg &= ~(1<<15); |
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195 | 196 | tmpreg &= ~(0xfff); |
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196 | 197 | tmpreg |= 0xfff & (APB1Freq/(2*speed)); |
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197 | 198 | } |
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198 | 199 | _dev_->CCR=tmpreg; |
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199 | 200 | tmpreg=_dev_->TRISE; |
|
200 | 201 | tmpreg &= ~(0x3f); |
|
201 | 202 | tmpreg |= (APB1Freq/1000000)+1; |
|
202 | 203 | _dev_->TRISE = tmpreg; |
|
203 | 204 | i2cenable(dev); |
|
204 | 205 | return 0; |
|
205 | 206 | } |
|
206 | 207 | } |
|
207 | 208 | return -1; |
|
208 | 209 | } |
|
209 | 210 | |
|
210 | 211 | int i2cbusy(i2c_t dev) |
|
211 | 212 | { |
|
212 | 213 | if((dev<i2c4)&&(dev>=i2c1)) |
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213 | 214 | { |
|
214 | 215 | I2C_TypeDef* _dev_ = _i2c_dev_table[(int)dev]; |
|
215 | 216 | if((_dev_->SR2 & 2) ==2) return 1; /* Dev is busy */ |
|
216 | 217 | return 0; /* Dev isn't busy */ |
|
217 | 218 | } |
|
218 | 219 | return -1; /* Error, dev is out of range */ |
|
219 | 220 | } |
|
220 | 221 | |
|
221 | 222 | int i2cwrite(i2c_t dev,char address,char* data,int count) |
|
222 | 223 | { |
|
223 | 224 | if((dev<i2c4)&&(dev>=i2c1)) |
|
224 | 225 | { |
|
225 | 226 | int timeout=i2ctimeout; |
|
226 | 227 | I2C_TypeDef* _dev_ = _i2c_dev_table[(int)dev]; |
|
227 | 228 | while(i2cbusy(dev)) |
|
228 | 229 | { |
|
229 | 230 | if(0==(timeout--)) |
|
230 | 231 | { |
|
231 | 232 | printf("Exited on timeout @ line %d\n\r",__LINE__); |
|
232 | 233 | return -1; |
|
233 | 234 | } |
|
234 | 235 | } |
|
235 | 236 | _dev_->CR1 |= 1<<8; |
|
236 | 237 | timeout=i2ctimeout; |
|
237 | 238 | while(!i2cStatusCheck(dev,((uint32_t)0x00030001))) |
|
238 | 239 | { |
|
239 | 240 | if(0==(timeout--)) |
|
240 | 241 | { |
|
241 | 242 | printf("Exited on timeout @ line %d\n\r",__LINE__); |
|
242 | 243 | return -1; |
|
243 | 244 | } |
|
244 | 245 | } |
|
245 | 246 | _dev_->DR= address<<1; |
|
246 | 247 | timeout=i2ctimeout; |
|
247 | 248 | while(!i2cStatusCheck(dev, ((uint32_t)0x00070082))) |
|
248 | 249 | { |
|
249 | 250 | if(0==(timeout--)) |
|
250 | 251 | { |
|
251 | 252 | printf("Exited on timeout @ line %d\n\r",__LINE__); |
|
252 | 253 | return -1; |
|
253 | 254 | } |
|
254 | 255 | } |
|
255 | 256 | address=_dev_->SR2; |
|
256 | 257 | for(int i=0;i<count;i++) |
|
257 | 258 | { |
|
258 | 259 | timeout=i2ctimeout; |
|
259 | 260 | while(!i2cStatusCheck(dev,((uint32_t)0x00070080))) |
|
260 | 261 | { |
|
261 | 262 | if(0==(timeout--)) |
|
262 | 263 | { |
|
263 | 264 | printf("Exited on timeout @ line %d\n\r",__LINE__); |
|
264 | 265 | return -1; |
|
265 | 266 | } |
|
266 | 267 | } |
|
267 | 268 | _dev_->DR= data[i]; |
|
268 | 269 | } |
|
269 | 270 | timeout=i2ctimeout; |
|
270 | 271 | while(!i2cStatusCheck(dev,1<<7)) |
|
271 | 272 | { |
|
272 | 273 | if(0==(timeout--)) |
|
273 | 274 | { |
|
274 | 275 | printf("Exited on timeout @ line %d\n\r",__LINE__); |
|
275 | 276 | return -1; |
|
276 | 277 | } |
|
277 | 278 | } |
|
278 | 279 | timeout=i2ctimeout; |
|
279 | 280 | while(!i2cStatusCheck(dev,1<<2)) |
|
280 | 281 | { |
|
281 | 282 | if(0==(timeout--)) |
|
282 | 283 | { |
|
283 | 284 | printf("Exited on timeout @ line %d\n\r",__LINE__); |
|
284 | 285 | return -1; |
|
285 | 286 | } |
|
286 | 287 | } |
|
287 | 288 | _dev_->CR1 |= 1<<9; |
|
288 | 289 | return count; |
|
289 | 290 | } |
|
290 | 291 | return -1; |
|
291 | 292 | } |
|
292 | 293 | |
|
293 | 294 | int i2cread(i2c_t dev,char address,char* data,int count) |
|
294 | 295 | { |
|
295 | 296 | if((dev<i2c4)&&(dev>=i2c1)) |
|
296 | 297 | { |
|
297 | 298 | int i=0; |
|
298 | 299 | int timeout=i2ctimeout; |
|
299 | 300 | while(i2cbusy(dev)) |
|
300 | 301 | { |
|
301 | 302 | if(0==(timeout--)) |
|
302 | 303 | { |
|
303 | 304 | printf("Exited on timeout @ line %d\n\r",__LINE__); |
|
304 | 305 | return -1; |
|
305 | 306 | } |
|
306 | 307 | } |
|
307 | 308 | I2C_TypeDef* _dev_ = _i2c_dev_table[(int)dev]; |
|
308 | 309 | _dev_->CR1 |= (1<<8) + (1<<10); |
|
309 | 310 | timeout=i2ctimeout; |
|
310 | 311 | while(!i2cStatusCheck(dev,0x00030001)) |
|
311 | 312 | { |
|
312 | 313 | if(0==(timeout--)) |
|
313 | 314 | { |
|
314 | 315 | printf("Exited on timeout @ line %d\n\r",__LINE__); |
|
315 | 316 | return -1; |
|
316 | 317 | } |
|
317 | 318 | } |
|
318 | 319 | _dev_->DR= (address<<1) + 1; |
|
319 | 320 | while(!i2cStatusCheck(dev,0x000002)) |
|
320 | 321 | { |
|
321 | 322 | if(0==(timeout--)) |
|
322 | 323 | { |
|
323 | 324 | printf("Exited on timeout @ line %d\n\r",__LINE__); |
|
324 | 325 | return -1; |
|
325 | 326 | } |
|
326 | 327 | } |
|
327 | 328 | if(count==1) |
|
328 | 329 | { |
|
329 | 330 | _dev_->CR1 &= ~(1<<10); |
|
330 | 331 | } |
|
331 | 332 | address=_dev_->SR2; |
|
332 | 333 | for(i=0;i<(count-1);i++) |
|
333 | 334 | { |
|
334 | 335 | timeout=i2ctimeout; |
|
335 | 336 | while(!i2cStatusCheck(dev,0x0000040)) |
|
336 | 337 | { |
|
337 | 338 | if(0==(timeout--)) |
|
338 | 339 | { |
|
339 | 340 | printf("Exited on timeout @ line %d\n\r",__LINE__); |
|
340 | 341 | return -1; |
|
341 | 342 | } |
|
342 | 343 | } |
|
343 | 344 | data[i]=_dev_->DR; |
|
344 | 345 | } |
|
345 | 346 | _dev_->CR1 &= ~(1<<10); |
|
346 | 347 | _dev_->CR1 |= 1<<9; |
|
347 | 348 | timeout=i2ctimeout; |
|
348 | 349 | while(!i2cStatusCheck(dev,0x0000040)) |
|
349 | 350 | { |
|
350 | 351 | if(0==(timeout--)) |
|
351 | 352 | { |
|
352 | 353 | printf("Exited on timeout @ line %d\n\r",__LINE__); |
|
353 | 354 | return -1; |
|
354 | 355 | } |
|
355 | 356 | } |
|
356 | 357 | data[i]=_dev_->DR; |
|
357 | 358 | timeout=i2ctimeout; |
|
358 | 359 | while(_dev_->CR1 & ((uint16_t)0x0200)) |
|
359 | 360 | { |
|
360 | 361 | if(0==(timeout--)) |
|
361 | 362 | { |
|
362 | 363 | printf("Exited on timeout @ line %d\n\r",__LINE__); |
|
363 | 364 | return -1; |
|
364 | 365 | } |
|
365 | 366 | } |
|
366 | 367 | _dev_->CR1 |= 1<<10; |
|
367 | 368 | return count; |
|
368 | 369 | } |
|
369 | 370 | return -1; |
|
370 | 371 | } |
|
371 | 372 | |
|
372 | 373 | |
|
373 | 374 | int i2cStatusCheck(i2c_t dev,int32_t flagMask) |
|
374 | 375 | { |
|
375 | 376 | int32_t flag; |
|
376 | 377 | if((dev<i2c4)&&(dev>=i2c1)) |
|
377 | 378 | { |
|
378 | 379 | I2C_TypeDef* _dev_ = _i2c_dev_table[(int)dev]; |
|
379 | 380 | flag= _dev_->SR1 + (_dev_->SR2<<16); |
|
380 | 381 | if(flagMask==(flag & flagMask)) |
|
381 | 382 | return 1; |
|
382 | 383 | return 0; |
|
383 | 384 | } |
|
384 | 385 | return -1; |
|
385 | 386 | } |
|
386 | 387 | |
|
387 | 388 |
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