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