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Rev 30 Rev 31
Line 130... Line 130...
130 
  .read = user_i2c2_read,
 130 
  .read = user_i2c2_read,
131 
  .write = user_i2c2_write,
 131 
  .write = user_i2c2_write,
132 
  .delay_ms = user_delay_ms,
 132 
  .delay_ms = user_delay_ms,
133 
 
 133 
 
134 
  /* Update interface pointer with the structure that contains both device address and file descriptor */
 134 
  /* Update interface pointer with the structure that contains both device address and file descriptor */
135 
  .dev_id = BMP280_I2C_ADDR_PRIM
 135 
  .dev_id = BMP280_I2C_ADDR_SEC
136 
  };
 136 
  };
137 
 
 137 
 
138 
int8_t rslt;
 138 
int8_t rslt;
139 
 
 139 
 
140 
 
 140 
 
Line 194... Line 194...
194 
  if (rslt != BMP280_OK)
 194 
  if (rslt != BMP280_OK)
195 
    return rslt;
 195 
    return rslt;
196 
 
 196 
 
197 
}
 197 
}
198 
 
 198 
 
- 
 
 199 
 
- 
 
 200 
///////////////////////////////////////
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 201 
// code dealing with I2C1
199 
static void reset_I2C1(void)
 202 
static void reset_I2C1(void)
200 
{
 203 
{
201 
  HAL_GPIO_WritePin ( GPIOB, GPIO_PIN_9, GPIO_PIN_SET);
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  HAL_GPIO_WritePin ( GPIOB, GPIO_PIN_9, GPIO_PIN_SET);
202 
  HAL_GPIO_WritePin ( GPIOB, GPIO_PIN_8, GPIO_PIN_SET);
 205 
  HAL_GPIO_WritePin ( GPIOB, GPIO_PIN_8, GPIO_PIN_SET);
203 
  __HAL_AFIO_REMAP_I2C1_DISABLE();
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  __HAL_AFIO_REMAP_I2C1_DISABLE();
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    }
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    }
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   __HAL_AFIO_REMAP_I2C1_ENABLE();
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   __HAL_AFIO_REMAP_I2C1_ENABLE();
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 217 
 
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}
 218 
}
216 
 
 219 
 
- 
 
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// the bus power also takes down the pullup power
- 
 
 221 
static void power_I2C1(uint8_t power)
- 
 
 222 
{
- 
 
 223 
  if(power)
- 
 
 224 
    {
- 
 
 225 
      HAL_GPIO_WritePin (I2C1_BusPower_GPIO_Port, I2C1_BusPower_Pin, GPIO_PIN_SET);
- 
 
 226 
    }
- 
 
 227 
  else
- 
 
 228 
    {
- 
 
 229 
      HAL_GPIO_WritePin (I2C1_BusPower_GPIO_Port, I2C1_BusPower_Pin, GPIO_PIN_RESET);
- 
 
 230 
    }
- 
 
 231 
}
- 
 
 232 
 
- 
 
 233 
typedef enum
- 
 
 234 
{
- 
 
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  BMP_NORMAL,              // normal operations
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  BMP_RESET_ACTIVE,        // powering down
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 237 
  BMP_PAUSE                // pause after powerup
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 238 
} bmp2state_t;
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 239 
 
- 
 
 240 
bmp2state_t bmp2state;
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 241 
unsigned    bmp2nextTime;
- 
 
 242 
unsigned    bmp2offset;
- 
 
 243 
 
217 
void resetBmp2(void)
 244 
void initBmp2(void)
218 
{
 245 
{
219 
  HAL_GPIO_WritePin (I2C1_BusPower_GPIO_Port, I2C1_BusPower_Pin, GPIO_PIN_RESET);
 - 
 
220 
  HAL_Delay (400);
 - 
 
221 
  HAL_GPIO_WritePin (I2C1_BusPower_GPIO_Port, I2C1_BusPower_Pin, GPIO_PIN_SET);
 - 
 
222 
  HAL_Delay (200);
 246 
  power_I2C1(1);
223 
  init_bmp(&conf2,&bmp2);
 247 
  init_bmp(&conf2,&bmp2);
- 
 
 248 
  bmp2state = BMP_NORMAL;
- 
 
 249 
  bmp2nextTime = 0;
- 
 
 250 
  bmp2offset   = 0;
- 
 
 251 
}
- 
 
 252 
 
- 
 
 253 
void resetBmp2(void)
- 
 
 254 
{
- 
 
 255 
  reset_I2C1();  // physically reset the hardware
- 
 
 256 
  power_I2C1(0); // power down the bus and devices
- 
 
 257 
  bmp2nextTime = HAL_GetTick(); // 600 milliseconds hold the bus reset for
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 258 
  bmp2offset = 600;
- 
 
 259 
  bmp2state = BMP_RESET_ACTIVE;
- 
 
 260 
}
- 
 
 261 
 
- 
 
 262 
uint8_t pollBmp2State(void)
- 
 
 263 
{
- 
 
 264 
  if (bmp2state == BMP_NORMAL)
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 265 
    return 1;
224 
 
 266 
 
- 
 
 267 
  if (HAL_GetTick()-bmp2offset <  bmp2nextTime)
- 
 
 268 
    return 0; // currently timer running
- 
 
 269 
  switch (bmp2state)
- 
 
 270 
  {
- 
 
 271 
    // at the end of the period, take action
- 
 
 272 
    case BMP_RESET_ACTIVE:
- 
 
 273 
      power_I2C1(1);
- 
 
 274 
      bmp2nextTime = HAL_GetTick();
- 
 
 275 
      bmp2offset =  200; // power up and wait for 200 milliseconds
- 
 
 276 
      bmp2state = BMP_PAUSE;
- 
 
 277 
      break;
- 
 
 278 
    case BMP_PAUSE:
- 
 
 279 
      init_bmp(&conf2,&bmp2);
- 
 
 280 
      bmp2state = BMP_NORMAL;
- 
 
 281 
      return 1; // now in normal operation
- 
 
 282 
    // can not get here in normal operation
- 
 
 283 
    case BMP_NORMAL:
- 
 
 284 
      return 1;
- 
 
 285 
  }
- 
 
 286 
  return 0;
225 
}
 287 
}
226 
 
 288 
 
227 
 
 289 
 
- 
 
 290 
 
228 
/* USER CODE END 0 */
 291 
/* USER CODE END 0 */
229 
 
 292 
 
230 
/**
 293 
/**
231 
  * @brief  The application entry point.
 294 
  * @brief  The application entry point.
232 
  * @retval int
 295 
  * @retval int
Line 278... Line 341...
278 
  EnableSerialRxInterrupt (&uc1);
 341 
  EnableSerialRxInterrupt (&uc1);
279 
 
 342 
 
280 
#endif
 343 
#endif
281 
 
 344 
 
282 
  init_bmp(&conf,&bmp);
 345 
  init_bmp(&conf,&bmp);
283 
  init_bmp(&conf2,&bmp2);
 346 
  initBmp2();
284 
 
 347 
 
285 
   cc_init ();
 348 
   cc_init ();
286 
 
 349 
 
287 
 
 350 
 
288 
  uint32_t timeNext = HAL_GetTick () + TICKS_LOOP;
 351 
  uint32_t timeNext = HAL_GetTick () + TICKS_LOOP;