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view Small_CPU/Src/i2c.c @ 74:f2d98ad6f1be
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author | Ideenmodellierer |
---|---|
date | Thu, 04 Oct 2018 20:40:53 +0200 |
parents | 5f11787b4f42 |
children | a6f0881074a4 |
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#include "baseCPU2.h" #include "i2c.h" #include "scheduler.h" /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ // =============================================================================== // I2C addresses - see i2c.h /// /// #define DEVICE_PRESSURE 0xEE (0x77) Write 0xEE Read 0xEF /// #define DEVICE_COMPASS_HMC5883L 0x3C (0x1E) Write 0x3C Read 0x3D /// #define DEVICE_ACCELARATOR_MMA8452Q 0x38 (0x1C) Write 0x38 Read 0x39 /// #define DEVICE_BATTERYGAUGE 0xC8 (0x64) Write 0xC8 /// #define DEVICE_COMPASS_303D 0x3C // 0x1E // x0011110 // SA0 to GND /// /// 0x6E 0x48 -> 0x6F 3d d1 86 3f 0x66 58 /// // =============================================================================== I2C_HandleTypeDef I2cHandle; /* static void I2C_Error_Handler(void) { while(1) { } } */ HAL_StatusTypeDef I2C1_Status(void) { return (HAL_StatusTypeDef)global.I2C_SystemStatus; } GPIO_PinState HAL_I2C_Read_Data_PIN(void) { return HAL_GPIO_ReadPin(I2Cx_SDA_GPIO_PORT,I2Cx_SDA_PIN); } void HAL_I2C_Send_One_CLOCK(void) { HAL_GPIO_WritePin(I2Cx_SCL_GPIO_PORT, I2Cx_SCL_PIN, GPIO_PIN_RESET); HAL_Delay(10); HAL_GPIO_WritePin(I2Cx_SCL_GPIO_PORT, I2Cx_SCL_PIN, GPIO_PIN_SET); HAL_Delay(10); } GPIO_PinState MX_I2C1_TestAndClear(void) { I2C_DeInit(); HAL_I2C_ManualControl_MspInit(); for(int i=0; i<9;i++) { if(HAL_I2C_Read_Data_PIN() == GPIO_PIN_RESET) HAL_I2C_Send_One_CLOCK(); else break; } return HAL_I2C_Read_Data_PIN(); } HAL_StatusTypeDef MX_I2C1_Init(void) { I2cHandle.Instance = I2Cx; I2cHandle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT; I2cHandle.Init.ClockSpeed = 100000;//400000; I2cHandle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLED; I2cHandle.Init.DutyCycle = I2C_DUTYCYCLE_16_9; I2cHandle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLED; I2cHandle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLED; I2cHandle.Init.OwnAddress1 = 0x01; global.dataSendToSlaveStopEval = 1; global.I2C_SystemStatus = HAL_I2C_Init(&I2cHandle); global.dataSendToSlaveStopEval = 0; if(global.dataSendToSlavePending) { scheduleSpecial_Evaluate_DataSendToSlave(); } return (HAL_StatusTypeDef)global.I2C_SystemStatus; } void I2C_DeInit(void) { HAL_I2C_DeInit(&I2cHandle); } uint8_t i2c_errors = 0; void I2C_Error_count(void) { i2c_errors++; } HAL_StatusTypeDef I2C_Master_TransmitNoStop( uint16_t DevAddress, uint8_t *pData, uint16_t Size) { if(global.I2C_SystemStatus != HAL_OK) return (HAL_StatusTypeDef)global.I2C_SystemStatus; global.dataSendToSlaveStopEval = 1; global.I2C_SystemStatus = HAL_I2C_Master_Transmit(&I2cHandle, DevAddress, pData, Size, 100 /*FIXME , 0*/); if(global.I2C_SystemStatus != HAL_OK) { I2C_Error_count(); } global.dataSendToSlaveStopEval = 0; if(global.dataSendToSlavePending) { scheduleSpecial_Evaluate_DataSendToSlave(); } return (HAL_StatusTypeDef)global.I2C_SystemStatus; } HAL_StatusTypeDef I2C_Master_Transmit( uint16_t DevAddress, uint8_t *pData, uint16_t Size) { if(global.I2C_SystemStatus != HAL_OK) return (HAL_StatusTypeDef)(global.I2C_SystemStatus & 0x03); global.dataSendToSlaveStopEval = 1; global.I2C_SystemStatus = HAL_I2C_Master_Transmit(&I2cHandle, DevAddress, pData, Size, 100 /*FIXME , 1*/); if(global.I2C_SystemStatus != HAL_OK) { I2C_Error_count(); } global.dataSendToSlaveStopEval = 0; if(global.dataSendToSlavePending) { scheduleSpecial_Evaluate_DataSendToSlave(); } return (HAL_StatusTypeDef)global.I2C_SystemStatus; } HAL_StatusTypeDef I2C_Master_Receive( uint16_t DevAddress, uint8_t *pData, uint16_t Size) { if(global.I2C_SystemStatus != HAL_OK) return (HAL_StatusTypeDef)global.I2C_SystemStatus; uint8_t localHALstatusReturn = 0xFF; global.dataSendToSlaveStopEval = 1; localHALstatusReturn = HAL_I2C_Master_Receive(&I2cHandle, DevAddress, pData, Size, 100); if(localHALstatusReturn != HAL_OK) { I2C_Error_count(); } global.dataSendToSlaveStopEval = 0; if(global.dataSendToSlavePending) { scheduleSpecial_Evaluate_DataSendToSlave(); } return (HAL_StatusTypeDef)localHALstatusReturn; }