47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
#include "i2c.h"
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#include "crc16.h"
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i2c_master_handle_t I2cMasterHandle;
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i2c_master_transfer_t masterTransfer;
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status_t I2cAsyncWrite(uint8_t i2cAddress, uint8_t *data, size_t dataSize)
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{
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masterTransfer.slaveAddress = i2cAddress;
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masterTransfer.direction = kI2C_Write;
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masterTransfer.data = data;
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masterTransfer.dataSize = dataSize;
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I2cMasterHandle.userData = NULL;
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return I2C_MasterTransferNonBlocking(I2C_MAIN_BUS_BASEADDR, &I2cMasterHandle, &masterTransfer);
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}
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status_t I2cAsyncWriteMessage(uint8_t i2cAddress, i2c_message_t *message)
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{
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masterTransfer.slaveAddress = i2cAddress;
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masterTransfer.direction = kI2C_Write;
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masterTransfer.data = (uint8_t*)message;
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masterTransfer.dataSize = I2C_MESSAGE_HEADER_LENGTH + message->length;
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I2cMasterHandle.userData = NULL;
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CRC16_UpdateMessageChecksum(message);
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return I2C_MasterTransferNonBlocking(I2C_MAIN_BUS_BASEADDR, &I2cMasterHandle, &masterTransfer);
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}
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status_t I2cAsyncRead(uint8_t i2cAddress, uint8_t *data, size_t dataSize)
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{
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masterTransfer.slaveAddress = i2cAddress;
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masterTransfer.direction = kI2C_Read;
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masterTransfer.data = data;
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masterTransfer.dataSize = dataSize;
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I2cMasterHandle.userData = NULL;
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return I2C_MasterTransferNonBlocking(I2C_MAIN_BUS_BASEADDR, &I2cMasterHandle, &masterTransfer);
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}
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status_t I2cAsyncReadMessage(uint8_t i2cAddress, i2c_message_t *message)
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{
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masterTransfer.slaveAddress = i2cAddress;
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masterTransfer.direction = kI2C_Read;
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masterTransfer.data = (uint8_t*)message;
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masterTransfer.dataSize = I2C_MESSAGE_MAX_TOTAL_LENGTH;
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I2cMasterHandle.userData = (void*)1;
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return I2C_MasterTransferNonBlocking(I2C_MAIN_BUS_BASEADDR, &I2cMasterHandle, &masterTransfer);
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}
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