230 lines
7.0 KiB
C++
230 lines
7.0 KiB
C++
#include "board_taranis.h"
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void I2C_EE_PageWrite(uint8_t* pBuffer, uint16_t WriteAddr, uint8_t NumByteToWrite);
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void I2C_EE_WaitEepromStandbyState(void);
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void eepromInit(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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GPIO_InitStructure.GPIO_Pin = I2C_GPIO_PIN_WP;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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GPIO_Init(I2C_GPIO, &GPIO_InitStructure);
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GPIO_ResetBits(I2C_GPIO, I2C_GPIO_PIN_WP);
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I2C_InitTypeDef I2C_InitStructure;
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I2C_InitStructure.I2C_ClockSpeed = I2C_SPEED;
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I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
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I2C_InitStructure.I2C_OwnAddress1 = 0x00;
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I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
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I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
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I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
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I2C_Init(I2C, &I2C_InitStructure);
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I2C_Cmd(I2C, ENABLE);
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GPIO_PinAFConfig(I2C_GPIO, I2C_GPIO_PinSource_SCL, I2C_GPIO_AF);
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GPIO_PinAFConfig(I2C_GPIO, I2C_GPIO_PinSource_SDA, I2C_GPIO_AF);
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GPIO_InitStructure.GPIO_Pin = I2C_GPIO_PIN_SCL | I2C_GPIO_PIN_SDA;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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GPIO_Init(I2C_GPIO, &GPIO_InitStructure);
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}
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#define I2C_TIMEOUT_MAX 1000
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bool I2C_CheckEventTimeout(uint32_t event)
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{
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uint32_t timeout = I2C_TIMEOUT_MAX;
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while (!I2C_CheckEvent(I2C, event)) {
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if ((timeout--) == 0) return false;
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}
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return true;
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}
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/**
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* @brief Reads a block of data from the EEPROM.
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* @param pBuffer : pointer to the buffer that receives the data read
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* from the EEPROM.
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* @param ReadAddr : EEPROM's internal address to read from.
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* @param NumByteToRead : number of bytes to read from the EEPROM.
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* @retval None
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*/
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void eepromReadBlock(uint8_t* pBuffer, uint16_t ReadAddr, uint16_t NumByteToRead)
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{
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while (I2C_CheckEvent(I2C, I2C_FLAG_BUSY));
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I2C_GenerateSTART(I2C, ENABLE);
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_MODE_SELECT))
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return;
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I2C_Send7bitAddress(I2C, I2C_ADDRESS_EEPROM, I2C_Direction_Transmitter);
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED))
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return;
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I2C_SendData(I2C, (uint8_t)((ReadAddr & 0xFF00) >> 8));
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_BYTE_TRANSMITTING))
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return;
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I2C_SendData(I2C, (uint8_t)(ReadAddr & 0x00FF));
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_BYTE_TRANSMITTED))
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return;
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I2C_GenerateSTART(I2C, ENABLE);
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_MODE_SELECT))
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return;
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I2C_Send7bitAddress(I2C, I2C_ADDRESS_EEPROM, I2C_Direction_Receiver);
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED))
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return;
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if (NumByteToRead > 1) {
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I2C_AcknowledgeConfig(I2C, ENABLE);
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}
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while (NumByteToRead) {
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if (NumByteToRead == 1) {
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I2C_AcknowledgeConfig(I2C, DISABLE);
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}
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_BYTE_RECEIVED))
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return;
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*pBuffer++ = I2C_ReceiveData(I2C);
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NumByteToRead--;
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}
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I2C_GenerateSTOP(I2C, ENABLE);
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}
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/**
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* @brief Writes buffer of data to the I2C EEPROM.
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* @param pBuffer : pointer to the buffer containing the data to be
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* written to the EEPROM.
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* @param WriteAddr : EEPROM's internal address to write to.
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* @param NumByteToWrite : number of bytes to write to the EEPROM.
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* @retval None
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*/
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void eepromWriteBlock(uint8_t* pBuffer, uint16_t WriteAddr, uint16_t NumByteToWrite)
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{
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uint8_t offset = WriteAddr % I2C_FLASH_PAGESIZE;
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uint8_t count = I2C_FLASH_PAGESIZE - offset;
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if (NumByteToWrite < I2C_FLASH_PAGESIZE)
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count = NumByteToWrite;
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while (count > 0) {
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I2C_EE_PageWrite(pBuffer, WriteAddr, count);
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I2C_EE_WaitEepromStandbyState();
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WriteAddr += count;
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pBuffer += count;
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NumByteToWrite -= count;
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count = I2C_FLASH_PAGESIZE;
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if (NumByteToWrite < I2C_FLASH_PAGESIZE)
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count = NumByteToWrite;
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}
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}
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/**
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* @brief Writes more than one byte to the EEPROM with a single WRITE cycle.
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* @note The number of byte can't exceed the EEPROM page size.
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* @param pBuffer : pointer to the buffer containing the data to be
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* written to the EEPROM.
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* @param WriteAddr : EEPROM's internal address to write to.
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* @param NumByteToWrite : number of bytes to write to the EEPROM.
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* @retval None
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*/
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void I2C_EE_PageWrite(uint8_t* pBuffer, uint16_t WriteAddr, uint8_t NumByteToWrite)
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{
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while (I2C_CheckEvent(I2C, I2C_FLAG_BUSY));
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I2C_GenerateSTART(I2C, ENABLE);
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_MODE_SELECT))
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return;
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I2C_Send7bitAddress(I2C, I2C_ADDRESS_EEPROM, I2C_Direction_Transmitter);
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED))
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return;
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I2C_SendData(I2C, (uint8_t)((WriteAddr & 0xFF00) >> 8));
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_BYTE_TRANSMITTING))
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return;
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I2C_SendData(I2C, (uint8_t)(WriteAddr & 0x00FF));
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_BYTE_TRANSMITTING))
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return;
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/* While there is data to be written */
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while (NumByteToWrite--) {
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I2C_SendData(I2C, *pBuffer);
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_BYTE_TRANSMITTING))
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return;
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pBuffer++;
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}
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_BYTE_TRANSMITTED))
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return;
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I2C_GenerateSTOP(I2C, ENABLE);
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}
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/**
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* @brief Wait for EEPROM Standby state
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* @param None
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* @retval None
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*/
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void I2C_EE_WaitEepromStandbyState(void)
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{
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do {
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I2C_GenerateSTART(I2C, ENABLE);
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_MODE_SELECT))
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return;
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I2C_Send7bitAddress(I2C, I2C_ADDRESS_EEPROM, I2C_Direction_Transmitter);
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} while (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
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I2C_GenerateSTOP(I2C, ENABLE);
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}
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void setVolume(uint8_t volume)
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{
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if (volume > VOLUME_LEVEL_MAX) {
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volume = VOLUME_LEVEL_MAX;
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}
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while (I2C_CheckEvent(I2C, I2C_FLAG_BUSY));
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I2C_GenerateSTART(I2C, ENABLE);
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_MODE_SELECT))
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return;
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I2C_Send7bitAddress(I2C, I2C_ADDRESS_CAT5137, I2C_Direction_Transmitter);
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED))
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return;
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I2C_SendData(I2C, 0);
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_BYTE_TRANSMITTING))
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return;
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I2C_SendData(I2C, volume);
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if (!I2C_CheckEventTimeout(I2C_EVENT_MASTER_BYTE_TRANSMITTED))
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return;
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I2C_GenerateSTOP(I2C, ENABLE);
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}
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#if 0
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uint8_t I2C_read_volume()
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{
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uint8_t volume ;
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I2C_START();
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I2C_SEND_DATA(I2C_ADDRESS_CAT5137|EE_CMD_WRITE);
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I2C_WAIT_ACK();
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I2C_SEND_DATA(0);
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I2C_WAIT_ACK();
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I2C_START();
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I2C_SEND_DATA(I2C_ADDRESS_CAT5137|EE_CMD_READ);
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I2C_WAIT_ACK();
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volume = I2C_READ();
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I2C_NO_ACK();
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I2C_STOP();
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return volume ;
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}
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#endif
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