Mercurial > public > ostc4
annotate Small_CPU/Src/i2c.c @ 207:b95741467355 ImprovmentSPI
Introduce scheduler function
The first implementation was only focussed on doing a hard sync and the new one uses an interface instead of global variables
| author | ideenmodellierer |
|---|---|
| date | Sun, 24 Mar 2019 22:53:17 +0100 |
| parents | 7e749084f347 |
| children | a9d798e8c11f |
| rev | line source |
|---|---|
| 38 | 1 #include "baseCPU2.h" |
| 2 #include "i2c.h" | |
| 3 #include "scheduler.h" | |
| 4 | |
| 5 /* Private typedef -----------------------------------------------------------*/ | |
| 6 /* Private define ------------------------------------------------------------*/ | |
| 7 /* Private macro -------------------------------------------------------------*/ | |
| 8 | |
| 9 | |
| 10 // =============================================================================== | |
| 11 // I2C addresses - see i2c.h | |
|
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Minor: Some documentation for new hardware
heinrichsweikamp
parents:
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12 // =============================================================================== |
| 38 | 13 |
| 14 I2C_HandleTypeDef I2cHandle; | |
| 15 | |
| 16 | |
| 17 /* | |
| 18 static void I2C_Error_Handler(void) | |
| 19 { | |
| 20 while(1) | |
| 21 { | |
| 22 } | |
| 23 } | |
| 24 */ | |
| 25 | |
| 26 HAL_StatusTypeDef I2C1_Status(void) | |
| 27 { | |
| 28 return (HAL_StatusTypeDef)global.I2C_SystemStatus; | |
| 29 } | |
| 30 | |
| 31 | |
| 32 GPIO_PinState HAL_I2C_Read_Data_PIN(void) | |
| 33 { | |
| 34 return HAL_GPIO_ReadPin(I2Cx_SDA_GPIO_PORT,I2Cx_SDA_PIN); | |
| 35 } | |
| 36 | |
| 37 void HAL_I2C_Send_One_CLOCK(void) | |
| 38 { | |
| 39 HAL_GPIO_WritePin(I2Cx_SCL_GPIO_PORT, I2Cx_SCL_PIN, GPIO_PIN_RESET); | |
| 40 HAL_Delay(10); | |
| 41 HAL_GPIO_WritePin(I2Cx_SCL_GPIO_PORT, I2Cx_SCL_PIN, GPIO_PIN_SET); | |
| 42 HAL_Delay(10); | |
| 43 } | |
| 44 | |
| 45 GPIO_PinState MX_I2C1_TestAndClear(void) | |
| 46 { | |
| 47 I2C_DeInit(); | |
| 48 HAL_I2C_ManualControl_MspInit(); | |
| 49 for(int i=0; i<9;i++) | |
| 50 { | |
| 51 if(HAL_I2C_Read_Data_PIN() == GPIO_PIN_RESET) | |
| 52 HAL_I2C_Send_One_CLOCK(); | |
| 53 else | |
| 54 break; | |
| 55 } | |
| 56 return HAL_I2C_Read_Data_PIN(); | |
| 57 } | |
| 58 | |
| 59 HAL_StatusTypeDef MX_I2C1_Init(void) | |
| 60 { | |
| 61 I2cHandle.Instance = I2Cx; | |
| 62 I2cHandle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT; | |
| 104 | 63 I2cHandle.Init.ClockSpeed = 100000;//400000; REDUCED for compatibility with HMC5583L + MMA8452Q |
| 38 | 64 I2cHandle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLED; |
| 104 | 65 I2cHandle.Init.DutyCycle = I2C_DUTYCYCLE_2; |
| 38 | 66 I2cHandle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLED; |
| 67 I2cHandle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLED; | |
| 68 I2cHandle.Init.OwnAddress1 = 0x01; | |
| 69 | |
| 88 | 70 global.dataSendToSlaveStopEval = 1; |
| 38 | 71 |
| 72 global.I2C_SystemStatus = HAL_I2C_Init(&I2cHandle); | |
| 82 | 73 HAL_I2CEx_AnalogFilter_Config(&I2cHandle, I2C_ANALOGFILTER_ENABLED); |
| 100 | 74 HAL_I2CEx_ConfigDigitalFilter(&I2cHandle,0x0F); |
| 75 | |
| 82 | 76 |
| 38 | 77 |
| 88 | 78 global.dataSendToSlaveStopEval = 0; |
| 100 | 79 if(global.dataSendToSlavePending) |
| 80 { | |
| 81 scheduleSpecial_Evaluate_DataSendToSlave(); | |
| 82 } | |
| 38 | 83 return (HAL_StatusTypeDef)global.I2C_SystemStatus; |
| 84 } | |
| 85 | |
| 86 | |
| 87 void I2C_DeInit(void) | |
| 88 { | |
| 89 HAL_I2C_DeInit(&I2cHandle); | |
| 90 } | |
| 91 | |
| 92 | |
| 93 uint8_t i2c_errors = 0; | |
| 94 | |
| 95 void I2C_Error_count(void) | |
| 96 { | |
| 97 i2c_errors++; | |
| 98 } | |
| 99 | |
| 100 | |
| 101 HAL_StatusTypeDef I2C_Master_TransmitNoStop( uint16_t DevAddress, uint8_t *pData, uint16_t Size) | |
| 102 { | |
| 103 if(global.I2C_SystemStatus != HAL_OK) | |
| 104 return (HAL_StatusTypeDef)global.I2C_SystemStatus; | |
| 105 | |
| 88 | 106 global.dataSendToSlaveStopEval = 1; |
| 38 | 107 |
| 182 | 108 global.I2C_SystemStatus = HAL_I2C_Master_Transmit(&I2cHandle, DevAddress, pData, Size, 0); |
| 38 | 109 if(global.I2C_SystemStatus != HAL_OK) |
| 110 { | |
| 111 I2C_Error_count(); | |
| 112 } | |
| 88 | 113 global.dataSendToSlaveStopEval = 0; |
| 104 | 114 //TODO: REMOVE. |
| 100 | 115 // if(global.dataSendToSlavePending) |
| 116 // { | |
| 117 // scheduleSpecial_Evaluate_DataSendToSlave(); | |
| 118 // } | |
| 38 | 119 return (HAL_StatusTypeDef)global.I2C_SystemStatus; |
| 120 } | |
| 121 | |
| 122 | |
| 123 HAL_StatusTypeDef I2C_Master_Transmit( uint16_t DevAddress, uint8_t *pData, uint16_t Size) | |
| 124 { | |
| 125 if(global.I2C_SystemStatus != HAL_OK) | |
| 126 return (HAL_StatusTypeDef)(global.I2C_SystemStatus & 0x03); | |
| 127 | |
| 128 | |
| 88 | 129 global.dataSendToSlaveStopEval = 1; |
| 38 | 130 |
| 182 | 131 global.I2C_SystemStatus = HAL_I2C_Master_Transmit(&I2cHandle, DevAddress, pData, Size, 2); |
| 38 | 132 if(global.I2C_SystemStatus != HAL_OK) |
| 133 { | |
| 134 I2C_Error_count(); | |
| 135 } | |
| 136 | |
| 88 | 137 global.dataSendToSlaveStopEval = 0; |
| 104 | 138 //TODO: REMOVE. |
| 100 | 139 // if(global.dataSendToSlavePending) |
| 140 // { | |
| 141 // scheduleSpecial_Evaluate_DataSendToSlave(); | |
| 142 // } | |
| 88 | 143 |
| 38 | 144 return (HAL_StatusTypeDef)global.I2C_SystemStatus; |
| 145 } | |
| 146 | |
| 147 | |
| 148 HAL_StatusTypeDef I2C_Master_Receive( uint16_t DevAddress, uint8_t *pData, uint16_t Size) | |
| 149 { | |
| 150 if(global.I2C_SystemStatus != HAL_OK) | |
| 151 return (HAL_StatusTypeDef)global.I2C_SystemStatus; | |
| 152 | |
| 153 uint8_t localHALstatusReturn = 0xFF; | |
| 154 | |
| 88 | 155 global.dataSendToSlaveStopEval = 1; |
| 38 | 156 |
| 104 | 157 localHALstatusReturn = HAL_I2C_Master_Receive(&I2cHandle, DevAddress, pData, Size, 10); |
| 38 | 158 if(localHALstatusReturn != HAL_OK) |
| 159 { | |
| 160 I2C_Error_count(); | |
| 161 } | |
| 162 | |
| 88 | 163 global.dataSendToSlaveStopEval = 0; |
| 104 | 164 //TODO: REMOVE. |
|
94
c6d284ea265b
reduce i2c speed and dutycycle for compass stability
Dmitry Romanov <kitt@bk.ru>
parents:
88
diff
changeset
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165 // if(global.dataSendToSlavePending) |
|
c6d284ea265b
reduce i2c speed and dutycycle for compass stability
Dmitry Romanov <kitt@bk.ru>
parents:
88
diff
changeset
|
166 // { |
| 100 | 167 // scheduleSpecial_Evaluate_DataSendToSlave(); |
|
94
c6d284ea265b
reduce i2c speed and dutycycle for compass stability
Dmitry Romanov <kitt@bk.ru>
parents:
88
diff
changeset
|
168 // } |
| 100 | 169 |
| 38 | 170 return (HAL_StatusTypeDef)localHALstatusReturn; |
| 171 } | |
| 172 |