117 lines
3.1 KiB
117 lines
3.1 KiB
#include "i2c.h"
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#include "usart.h"
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//uint32_t i2cCR1;
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//uint32_t i2cCR2;
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//uint32_t i2cISR;
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void i2cInit( i2c_t *i2cHardware,
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i2cCh_t channelNo,
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i2cMode_t mode,
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uint16_t mainAddress,
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uint16_t secondAddress,
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i2cAddressCount_t addressCount,
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i2cAddressSize_t addressSize,
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i2cSpeed_t speed,
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i2cOpperationMode_t opperationMode,
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i2cClockStretching_t stretching,
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i2cWakeUpTypes_t wakeOn)
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{
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i2cHardware->channelNo = channelNo;
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i2cHardware->mode = mode;
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i2cHardware->mainAddress = mainAddress;
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i2cHardware->secondAddress = secondAddress;
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i2cHardware->addressCount = addressCount;
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i2cHardware->addressSize = addressSize;
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i2cHardware->speed = speed;
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i2cHardware->opperationMode = opperationMode;
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i2cHardware->stretching = stretching;
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i2cHardware->wakeOn = wakeOn;
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i2cHardware->hardwareState = i2cHwIdle;
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i2cHardware->periferalState = i2cPerifNotInitialized;
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i2cEnableHardware(i2cHardware);
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i2cDisablePeriferal(i2cHardware);
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i2cConfigureFilters(i2cHardware);
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i2cSetClockStretch(i2cHardware, stretching);
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i2cSetSpeed(i2cHardware, speed);
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i2cSetMode(i2cHardware, opperationMode);
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i2cSetAddressLenght(i2cHardware, addressSize);
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i2cSetAddress(i2cHardware, mainAddress, secondAddress);
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i2cEnablePeriferal(i2cHardware);
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while(i2cHardware->periferalState != i2cPerifReady)
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{
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i2cIsPeriferalReady(i2cHardware);
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}
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i2cHardware->periferalState = i2cPerifInitialized;
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}
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void i2cDeInit(i2c_t *i2cHardware)
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{
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}
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void i2cRead(i2c_t *i2cHardware, uint16_t *slaveAddress, uint8_t *registerAddress, uint8_t *data, uint8_t *dataLenght)
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{
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//
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// Start
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// Send Address
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// Wait For ACK
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//
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i2cSetTransferCounter(i2cHardware,1);
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i2cSendSlaveAddressWrite(i2cHardware, slaveAddress);
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i2cHardware->periferalState = i2cPerifTransmitting;
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i2cSendRegisterAddress(i2cHardware,registerAddress);
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while(i2cHardware->periferalState != i2cPerifTransferComplete)
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{
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i2cIsTransferComplete(i2cHardware);
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}
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i2cSendSlaveAddressRead(i2cHardware, slaveAddress);
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i2cHardware->periferalState = i2cPerifRecieving;
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while(i2cHardware->periferalState != i2cPerifTransferComplete)
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{
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i2cIsTransferComplete(i2cHardware);
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}
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i2cGenerateNack(i2cHardware);
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i2cGenerateStop(i2cHardware);
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i2cReadInputRegister(i2cHardware, data);
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while(i2cHardware->periferalState != i2cPerifReady)
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{
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i2cIsPeriferalReady(i2cHardware);
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}
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i2cHardware->periferalState = i2cPerifReady;
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i2cHardware->hardwareState = i2cHwIdle;
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}
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void i2cWrite(i2c_t *i2cHardware, uint16_t *slaveAddress, uint8_t *registerAddress, uint8_t *data, uint8_t *dataLenght)
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{
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i2cSetTransferCounter(i2cHardware,0);
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i2cSendSlaveAddressWrite(i2cHardware, slaveAddress);
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i2cHardware->periferalState = i2cPerifTransmitting;
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i2cSendRegisterAddress(i2cHardware,registerAddress);
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i2cHardware->periferalState = i2cPerifTransmitting;
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i2cSendData(i2cHardware,data);
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while(i2cHardware->periferalState != i2cPerifTransferComplete)
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{
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i2cIsTransferComplete(i2cHardware);
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}
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}
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void i2cThrowError(int16_t error)
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{
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print_Usart(usart2, "I2C Error Detected : ");
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usartSendChar(usart2, error + 0x30);
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}
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