mirror of
https://github.com/oopuuu/zTC1.git
synced 2025-12-17 15:38:14 +08:00
212 lines
6.5 KiB
C
212 lines
6.5 KiB
C
/**
|
|
******************************************************************************
|
|
* @file platform_i2c.c
|
|
* @author William Xu
|
|
* @version V1.0.0
|
|
* @date 05-May-2014
|
|
* @brief This file provide I2C driver functions.
|
|
******************************************************************************
|
|
* UNPUBLISHED PROPRIETARY SOURCE CODE
|
|
* Copyright (c) 2016 MXCHIP Inc.
|
|
*
|
|
* The contents of this file may not be disclosed to third parties, copied or
|
|
* duplicated in any form, in whole or in part, without the prior written
|
|
* permission of MXCHIP Corporation.
|
|
******************************************************************************
|
|
*/
|
|
|
|
#include "platform.h"
|
|
#include "platform_peripheral.h"
|
|
#include "platform_logging.h"
|
|
|
|
/******************************************************
|
|
* Constants
|
|
******************************************************/
|
|
|
|
/******************************************************
|
|
* Enumerations
|
|
******************************************************/
|
|
|
|
/******************************************************
|
|
* Type Definitions
|
|
******************************************************/
|
|
|
|
/******************************************************
|
|
* Structures
|
|
******************************************************/
|
|
|
|
/******************************************************
|
|
* Variables Definitions
|
|
******************************************************/
|
|
|
|
/******************************************************
|
|
* Function Declarations
|
|
******************************************************/
|
|
|
|
/******************************************************
|
|
* Function Definitions
|
|
******************************************************/
|
|
|
|
/**
|
|
* Initialise I2C interface
|
|
*
|
|
* @param[in] i2c_interface : I2C interface
|
|
* @param[in] config : I2C configuration
|
|
*
|
|
* @return @ref OSStatus
|
|
*/
|
|
OSStatus platform_i2c_init( const platform_i2c_t* i2c, const platform_i2c_config_t* config )
|
|
{
|
|
hal_i2c_config_t i2c_init;
|
|
hal_gpio_init(HAL_GPIO_27);
|
|
hal_gpio_init(HAL_GPIO_28);
|
|
hal_pinmux_set_function(HAL_GPIO_27,HAL_GPIO_27_I2C1_CLK);
|
|
hal_pinmux_set_function(HAL_GPIO_28,HAL_GPIO_28_I2C1_DATA);
|
|
i2c_init.frequency = config->speed_mode == I2C_LOW_SPEED_MODE ? HAL_I2C_FREQUENCY_50K
|
|
: config->speed_mode == I2C_STANDARD_SPEED_MODE ? HAL_I2C_FREQUENCY_100K : HAL_I2C_FREQUENCY_400K;
|
|
hal_i2c_master_init(HAL_I2C_MASTER_0,&i2c_init);
|
|
return kNoErr;
|
|
}
|
|
|
|
|
|
/**
|
|
* Deinitialise I2C interface
|
|
*
|
|
* @param[in] i2c_interface : I2C interface
|
|
*
|
|
* @return @ref OSStatus
|
|
*/
|
|
OSStatus platform_i2c_deinit( const platform_i2c_t* i2c, const platform_i2c_config_t* config )
|
|
{
|
|
hal_i2c_master_deinit(HAL_I2C_MASTER_0);
|
|
hal_gpio_deinit(HAL_GPIO_27);
|
|
hal_gpio_deinit(HAL_GPIO_28);
|
|
return kNoErr;
|
|
}
|
|
|
|
|
|
/**
|
|
* Probe I2C slave device
|
|
*
|
|
* @param[in] i2c_interface : I2C interface
|
|
* @param[in] retries : number of retries
|
|
*
|
|
* @return @ref OSStatus
|
|
*/
|
|
bool platform_i2c_probe_device( const platform_i2c_t* i2c, const platform_i2c_config_t* config, int retries )
|
|
{
|
|
uint8_t dummy_byte = 0xAA;
|
|
|
|
while(retries--){
|
|
if(hal_i2c_master_send_polling(HAL_I2C_MASTER_0,config->address,&dummy_byte,1) == HAL_I2C_STATUS_OK){
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
/**
|
|
* Initialise I2C transmit message
|
|
*
|
|
* @param[in,out] message : I2C message
|
|
* @param[in] tx_buffer : transmit buffer
|
|
* @param[in] tx_buffer_length : transmit buffer length is bytes
|
|
* @param[in] retries : number of transmission retries
|
|
*
|
|
* @return @ref OSStatus
|
|
*/
|
|
OSStatus platform_i2c_init_tx_message( platform_i2c_message_t* message, const void* tx_buffer, uint16_t tx_buffer_length, uint16_t retries )
|
|
{
|
|
memset(message, 0x00, sizeof(platform_i2c_message_t));
|
|
message->tx_buffer = tx_buffer;
|
|
message->retries = retries;
|
|
message->tx_length = tx_buffer_length;
|
|
|
|
return kNoErr;
|
|
}
|
|
|
|
|
|
/**
|
|
* Initialise I2C receive message
|
|
*
|
|
* @param[in,out] message : I2C message
|
|
* @param[in] rx_buffer : receive buffer
|
|
* @param[in] rx_buffer_length : receive buffer length is bytes
|
|
* @param[in] retries : number of transmission retries
|
|
*
|
|
* @return @ref OSStatus
|
|
*/
|
|
OSStatus platform_i2c_init_rx_message( platform_i2c_message_t* message, void* rx_buffer, uint16_t rx_buffer_length, uint16_t retries )
|
|
{
|
|
memset(message, 0x00, sizeof(platform_i2c_message_t));
|
|
message->rx_buffer = rx_buffer;
|
|
message->retries = retries;
|
|
message->rx_length = rx_buffer_length;
|
|
|
|
return kNoErr;
|
|
}
|
|
|
|
|
|
/**
|
|
* Initialise I2C combined message
|
|
*
|
|
* @param[in,out] message : I2C message
|
|
* @param[in] tx_buffer : transmit buffer
|
|
* @param[in] rx_buffer : receive buffer
|
|
* @param[in] tx_buffer_length : transmit buffer length is bytes
|
|
* @param[in] rx_buffer_length : receive buffer length is bytes
|
|
* @param[in] retries : number of transmission retries
|
|
*
|
|
* @return @ref OSStatus
|
|
*/
|
|
OSStatus platform_i2c_init_combined_message( platform_i2c_message_t* message, const void* tx_buffer, void* rx_buffer, uint16_t tx_buffer_length, uint16_t rx_buffer_length, uint16_t retries )
|
|
{
|
|
memset(message, 0x00, sizeof(platform_i2c_message_t));
|
|
message->rx_buffer = rx_buffer;
|
|
message->tx_buffer = tx_buffer;
|
|
message->retries = retries;
|
|
message->tx_length = tx_buffer_length;
|
|
message->rx_length = rx_buffer_length;
|
|
|
|
return kNoErr;
|
|
}
|
|
|
|
|
|
/**
|
|
* Transfer data via the I2C interface
|
|
*
|
|
* @param[in] i2c_interface : I2C interface
|
|
* @param[in] messages : pointer to an array of messages to transceive
|
|
* @param[in] number_of_messages : number of messages in the array
|
|
*
|
|
* @return @ref OSStatus
|
|
*/
|
|
OSStatus platform_i2c_transfer( const platform_i2c_t* i2c, const platform_i2c_config_t* config, platform_i2c_message_t* messages, uint16_t number_of_messages )
|
|
{
|
|
for( uint8_t i=0; i<number_of_messages; i++ )
|
|
{
|
|
platform_i2c_message_t *message = &messages[i];
|
|
if ( message->tx_buffer != NULL )
|
|
{
|
|
if(hal_i2c_master_send_polling(HAL_I2C_MASTER_0, config->address, messages->tx_buffer, messages->tx_length) != HAL_I2C_STATUS_OK)
|
|
{
|
|
return kTimeoutErr;
|
|
}
|
|
}
|
|
|
|
if ( message->rx_buffer != NULL )
|
|
{
|
|
if(hal_i2c_master_receive_polling(HAL_I2C_MASTER_0, config->address, messages->rx_buffer, messages->rx_length) != HAL_I2C_STATUS_OK)
|
|
{
|
|
return kTimeoutErr;
|
|
}
|
|
}
|
|
}
|
|
return kNoErr;
|
|
}
|
|
|
|
|
|
|
|
|