@@ -93,7 +93,7 void bsp_spi_init() | |||||
93 |
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93 | |||
94 | void bsp_iic_init() |
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94 | void bsp_iic_init() | |
95 | { |
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95 | { | |
96 |
if(0==i2copenandconfig(i2c1,0, |
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96 | if(0==i2copenandconfig(i2c1,0,400000,PB9,PB6))printf("I2C1 opened\n\r"); | |
97 | i2cenable(i2c1); |
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97 | i2cenable(i2c1); | |
98 | } |
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98 | } | |
99 |
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99 |
@@ -12,6 +12,10 extern streamdevice* __opnfiles__[]; | |||||
12 | int main() |
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12 | int main() | |
13 | { |
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13 | { | |
14 | //gpioset(PSU_DISABLE); |
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14 | //gpioset(PSU_DISABLE); | |
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15 | gpio_t dacRst=gpioopen(PD4); | |||
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16 | gpiosetspeed(&dacRst,gpiohighspeed); | |||
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17 | gpiosetdir(&dacRst,gpiooutdir); | |||
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18 | gpioset(dacRst); | |||
15 | printf("i2C Control register 1 (I2C_CR1) = %x\n\r",I2C1->CR1); |
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19 | printf("i2C Control register 1 (I2C_CR1) = %x\n\r",I2C1->CR1); | |
16 | printf("i2C Control register 2 (I2C_CR2) = %x\n\r",I2C1->CR2); |
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20 | printf("i2C Control register 2 (I2C_CR2) = %x\n\r",I2C1->CR2); | |
17 | printf("i2C Status register 1 (I2C_SR1) = %x\n\r",I2C1->SR1); |
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21 | printf("i2C Status register 1 (I2C_SR1) = %x\n\r",I2C1->SR1); | |
@@ -25,7 +29,7 int main() | |||||
25 | for(volatile int i=0;i<1024*2048;i++); |
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29 | for(volatile int i=0;i<1024*2048;i++); | |
26 | gpioclr(LED1); |
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30 | gpioclr(LED1); | |
27 | gpioset(LED2); |
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31 | gpioset(LED2); | |
28 |
i2cwrite(i2c1,0x4a,"test", |
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32 | i2cwrite(i2c1,0x4a,"test",1); | |
29 | } |
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33 | } | |
30 | printf("hello world\n\r"); |
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34 | printf("hello world\n\r"); | |
31 | return 0; |
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35 | return 0; |
@@ -52,7 +52,8 extern int i2csetspeed(i2c_t dev,uint32_ | |||||
52 | //extern int i2csetdatabits(i2c_t* dev,uartbits_t databits); |
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52 | //extern int i2csetdatabits(i2c_t* dev,uartbits_t databits); | |
53 | extern int i2cwrite(i2c_t dev,char address,char* data,int count); |
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53 | extern int i2cwrite(i2c_t dev,char address,char* data,int count); | |
54 | extern int i2cread(i2c_t dev,char address,char* data,int count); |
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54 | extern int i2cread(i2c_t dev,char address,char* data,int count); | |
55 |
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55 | extern int i2cbusy(i2c_t dev); | ||
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56 | extern int i2cStatusCheck(i2c_t dev,int32_t flagMask); | |||
56 | #ifdef __cplusplus |
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57 | #ifdef __cplusplus | |
57 | } |
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58 | } | |
58 | #endif |
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59 | #endif |
@@ -66,16 +66,13 i2c_t i2copenandconfig(int count,uint32_ | |||||
66 | i2c_t dev = i2copen(count); |
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66 | i2c_t dev = i2copen(count); | |
67 | if(dev!=-1) |
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67 | if(dev!=-1) | |
68 | { |
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68 | { | |
69 |
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69 | i2cclose(dev); | |
70 | I2C_TypeDef* _dev_ = _i2c_dev_table[(int)dev]; |
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71 | _dev_->CR1 = (1<<15); |
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72 | _dev_->CR1 &=~(1<<15); |
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73 | i2cdisable(count); |
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74 | i2csetpins(dev,SDA,SCL); |
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70 | i2csetpins(dev,SDA,SCL); | |
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71 | i2copen(count); | |||
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72 | i2cenable(count); | |||
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73 | //I2C_TypeDef* _dev_ = _i2c_dev_table[(int)dev]; | |||
75 | i2csetspeed(dev,speed); |
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74 | i2csetspeed(dev,speed); | |
76 | i2cenable(count); |
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75 | i2cenable(count); | |
77 | _dev_->CR1|=1<<15; |
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78 | _dev_->CR1&=~(1<<15); |
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79 | } |
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76 | } | |
80 | return dev; |
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77 | return dev; | |
81 | } |
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78 | } | |
@@ -163,15 +160,12 int i2csetspeed(i2c_t dev,uint32_t speed | |||||
163 | int32_t APB1Freq=getAPB1Freq()/1000000; |
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160 | int32_t APB1Freq=getAPB1Freq()/1000000; | |
164 | if((APB1Freq>1)&&(APB1Freq<43)) |
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161 | if((APB1Freq>1)&&(APB1Freq<43)) | |
165 | { |
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162 | { | |
166 | i2cdisable(dev); |
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163 | ||
167 | uint16_t tmpreg=_dev_->CR2; |
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164 | uint16_t tmpreg=_dev_->CR2; | |
168 | tmpreg &= ~(0x1f); |
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165 | tmpreg &= ~(0x1f); | |
169 | tmpreg |= APB1Freq; |
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166 | tmpreg |= APB1Freq; | |
170 | _dev_->CR2=tmpreg; |
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167 | _dev_->CR2=tmpreg; | |
171 | tmpreg=_dev_->TRISE; |
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168 | i2cdisable(dev); | |
172 | tmpreg &= ~(0x3f); |
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173 | tmpreg |= APB1Freq+1; |
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174 | _dev_->TRISE = tmpreg; |
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175 | tmpreg=_dev_->CCR; |
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169 | tmpreg=_dev_->CCR; | |
176 | APB1Freq=getAPB1Freq(); |
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170 | APB1Freq=getAPB1Freq(); | |
177 | if(speed>100000) //100kHz= standard mode, 400kHz= fast mode |
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171 | if(speed>100000) //100kHz= standard mode, 400kHz= fast mode | |
@@ -191,29 +185,46 int i2csetspeed(i2c_t dev,uint32_t speed | |||||
191 | tmpreg |= 0xfff & (APB1Freq/(2*speed)); |
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185 | tmpreg |= 0xfff & (APB1Freq/(2*speed)); | |
192 | } |
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186 | } | |
193 | _dev_->CCR=tmpreg; |
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187 | _dev_->CCR=tmpreg; | |
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188 | tmpreg=_dev_->TRISE; | |||
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189 | tmpreg &= ~(0x3f); | |||
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190 | tmpreg |= (APB1Freq/1000000)+1; | |||
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191 | _dev_->TRISE = tmpreg; | |||
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192 | i2cenable(dev); | |||
194 | return 0; |
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193 | return 0; | |
195 | } |
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194 | } | |
196 | } |
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195 | } | |
197 | return -1; |
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196 | return -1; | |
198 | } |
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197 | } | |
199 |
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198 | |||
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199 | int i2cbusy(i2c_t dev) | |||
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200 | { | |||
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201 | if((dev<3)&&(dev>=0)) | |||
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202 | { | |||
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203 | I2C_TypeDef* _dev_ = _i2c_dev_table[(int)dev]; | |||
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204 | if((_dev_->SR2 & 2) ==2) return 1; /* Dev is busy */ | |||
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205 | return 0; /* Dev isn't busy */ | |||
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206 | } | |||
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207 | return -1; /* Error, dev is out of range */ | |||
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208 | } | |||
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209 | ||||
200 | int i2cwrite(i2c_t dev,char address,char* data,int count) |
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210 | int i2cwrite(i2c_t dev,char address,char* data,int count) | |
201 | { |
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211 | { | |
202 | if((dev<3)&&(dev>=0)) |
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212 | if((dev<3)&&(dev>=0)) | |
203 | { |
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213 | { | |
204 | I2C_TypeDef* _dev_ = _i2c_dev_table[(int)dev]; |
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214 | I2C_TypeDef* _dev_ = _i2c_dev_table[(int)dev]; | |
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215 | while(i2cbusy(dev)); | |||
205 | _dev_->CR1 |= 1<<8; |
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216 | _dev_->CR1 |= 1<<8; | |
206 | while((_dev_->SR1&1)==0); |
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217 | while(!i2cStatusCheck(dev,((uint32_t)0x00030001))); | |
207 | _dev_->DR= address<<1; |
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218 | _dev_->DR= address<<1; | |
208 | while((_dev_->SR1 & (1<<3))==0); |
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219 | while(!i2cStatusCheck(dev, ((uint32_t)0x00070082))); | |
209 | address=_dev_->SR2; |
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220 | address=_dev_->SR2; | |
210 | for(int i=0;i<count;i++) |
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221 | for(int i=0;i<count;i++) | |
211 | { |
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222 | { | |
212 | while((_dev_->SR1 & (1<<7))==0); |
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223 | while(!i2cStatusCheck(dev,((uint32_t)0x00070080))); | |
213 | _dev_->DR= data[i]; |
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224 | _dev_->DR= data[i]; | |
214 | } |
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225 | } | |
215 |
while(( |
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226 | while(!i2cStatusCheck(dev,1<<7)); | |
216 |
while(( |
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227 | while(!i2cStatusCheck(dev,1<<2)); | |
217 | _dev_->CR1 |= 1<<9; |
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228 | _dev_->CR1 |= 1<<9; | |
218 | return count; |
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229 | return count; | |
219 | } |
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230 | } | |
@@ -224,15 +235,16 int i2cread(i2c_t dev,char address,char* | |||||
224 | { |
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235 | { | |
225 | if((dev<3)&&(dev>=0)) |
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236 | if((dev<3)&&(dev>=0)) | |
226 | { |
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237 | { | |
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238 | while(i2cbusy(dev)); | |||
227 | I2C_TypeDef* _dev_ = _i2c_dev_table[(int)dev]; |
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239 | I2C_TypeDef* _dev_ = _i2c_dev_table[(int)dev]; | |
228 | _dev_->CR1 |= (1<<8) | (1<<10); |
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240 | _dev_->CR1 |= (1<<8) | (1<<10); | |
229 | if(count==1) |
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241 | if(count==1) | |
230 | { |
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242 | { | |
231 | _dev_->CR1 &= ~(1<<10); |
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243 | _dev_->CR1 &= ~(1<<10); | |
232 | } |
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244 | } | |
233 | while((_dev_->SR1&1)==0); |
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245 | while(!i2cStatusCheck(dev,0x00030001)); | |
234 | _dev_->DR= (address<<1) + 1; |
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246 | _dev_->DR= (address<<1) + 1; | |
235 | while((_dev_->SR1 & (1<<3))==0); |
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247 | while(!i2cStatusCheck(dev, ((uint32_t)0x00070082))); | |
236 | address=_dev_->SR2; |
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248 | address=_dev_->SR2; | |
237 | for(int i=0;i<count-1;i++) |
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249 | for(int i=0;i<count-1;i++) | |
238 | { |
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250 | { | |
@@ -249,6 +261,22 int i2cread(i2c_t dev,char address,char* | |||||
249 | } |
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261 | } | |
250 |
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262 | |||
251 |
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263 | |||
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264 | int i2cStatusCheck(i2c_t dev,int32_t flagMask) | |||
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265 | { | |||
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266 | int32_t flag; | |||
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267 | __asm__("nop"); | |||
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268 | __asm__("nop"); | |||
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269 | __asm__("nop"); | |||
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270 | __asm__("nop"); | |||
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271 | if((dev<3)&&(dev>=0)) | |||
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272 | { | |||
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273 | I2C_TypeDef* _dev_ = _i2c_dev_table[(int)dev]; | |||
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274 | flag= _dev_->SR1 + (_dev_->SR2<<16); | |||
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275 | if(flagMask==(flag & flagMask)) | |||
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276 | return 1; | |||
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277 | return 0; | |||
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278 | } | |||
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279 | return -1; | |||
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280 | } | |||
252 |
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281 | |||
253 |
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282 | |||
254 |
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