1 | HAL_StatusTypeDef HAL_I2C_Master_Transmit(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout)
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2 | {
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3 | uint32_t tickstart = 0U;
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4 |
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5 | if(hi2c->State == HAL_I2C_STATE_READY)
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6 | {
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7 | /* Process Locked */
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8 | __HAL_LOCK(hi2c);
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9 |
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10 | /* Init tickstart for timeout management*/
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11 | tickstart = HAL_GetTick();
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12 |
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13 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY, tickstart) != HAL_OK)
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14 | {
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15 | return HAL_TIMEOUT;
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16 | }
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17 |
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18 | hi2c->State = HAL_I2C_STATE_BUSY_TX;
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19 | hi2c->Mode = HAL_I2C_MODE_MASTER;
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20 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
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21 |
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22 | /* Prepare transfer parameters */
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23 | hi2c->pBuffPtr = pData;
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24 | hi2c->XferCount = Size;
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25 | hi2c->XferISR = NULL;
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26 |
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27 | /* Send Slave Address */
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28 | /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */
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29 | if(hi2c->XferCount > MAX_NBYTE_SIZE)
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30 | {
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31 | hi2c->XferSize = MAX_NBYTE_SIZE;
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32 | I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_RELOAD_MODE, I2C_GENERATE_START_WRITE);
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33 | }
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34 | else
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35 | {
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36 | hi2c->XferSize = hi2c->XferCount;
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37 | I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_WRITE);
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38 | }
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39 |
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40 | while(hi2c->XferCount > 0U)
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41 | {
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42 | /* Wait until TXIS flag is set */
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43 | if(I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
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44 | {
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45 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
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46 | {
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47 | return HAL_ERROR;
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48 | }
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49 | else
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50 | {
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51 | return HAL_TIMEOUT;
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52 | }
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53 | }
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54 | /* Write data to TXDR */
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55 | hi2c->Instance->TXDR = (*hi2c->pBuffPtr++);
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56 | hi2c->XferCount--;
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57 | hi2c->XferSize--;
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58 |
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59 | if((hi2c->XferSize == 0U) && (hi2c->XferCount!=0U))
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60 | {
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61 | /* Wait until TCR flag is set */
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62 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout, tickstart) != HAL_OK)
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63 | {
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64 | return HAL_TIMEOUT;
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65 | }
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66 |
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67 | if(hi2c->XferCount > MAX_NBYTE_SIZE)
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68 | {
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69 | hi2c->XferSize = MAX_NBYTE_SIZE;
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70 | I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
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71 | }
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72 | else
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73 | {
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74 | hi2c->XferSize = hi2c->XferCount;
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75 | I2C_TransferConfig(hi2c, DevAddress, hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
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76 | }
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77 | }
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78 | }
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79 |
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80 | /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
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81 | /* Wait until STOPF flag is set */
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82 | if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
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83 | {
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84 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
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85 | {
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86 | return HAL_ERROR;
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87 | }
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88 | else
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89 | {
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90 | return HAL_TIMEOUT;
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91 | }
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92 | }
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93 |
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94 | /* Clear STOP Flag */
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95 | __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
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96 |
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97 | /* Clear Configuration Register 2 */
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98 | I2C_RESET_CR2(hi2c);
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99 |
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100 | hi2c->State = HAL_I2C_STATE_READY;
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101 | hi2c->Mode = HAL_I2C_MODE_NONE;
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102 |
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103 | /* Process Unlocked */
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104 | __HAL_UNLOCK(hi2c);
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105 |
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106 | return HAL_OK;
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107 | }
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108 | else
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109 | {
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110 | return HAL_BUSY;
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111 | }
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112 | }
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