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/**
*********************************************************************************************************
* Copyright(c) 2018, Realtek Semiconductor Corporation. All rights reserved.
*********************************************************************************************************
* @file io_spi.c
* @brief This file provides demo code of spi master.
GD25Q128E is slave.
Read the chip id of GD25Q128E.
* @details
* @author yuan
* @date 2018-12-07
* @version v1.0
*********************************************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "io_spi.h"
#include "spi_flash.h"
#include "app_task.h"
/* Globals ------------------------------------------------------------------*/
uint8_t flash_id_type = 0;
/**
* @brief Initialization of pinmux settings and pad settings.
* @param No parameter.
* @return void
*/
void board_spi_init(void)
{
Pad_Config(SPI0_SCK_PIN, PAD_PINMUX_MODE, PAD_IS_PWRON, PAD_PULL_UP, PAD_OUT_ENABLE, PAD_OUT_HIGH);
Pad_Config(SPI0_MOSI_PIN, PAD_PINMUX_MODE, PAD_IS_PWRON, PAD_PULL_UP, PAD_OUT_ENABLE, PAD_OUT_HIGH);
Pad_Config(SPI0_MISO_PIN, PAD_PINMUX_MODE, PAD_IS_PWRON, PAD_PULL_UP, PAD_OUT_ENABLE, PAD_OUT_HIGH);
Pad_Config(SPI0_CS_PIN, PAD_PINMUX_MODE, PAD_IS_PWRON, PAD_PULL_UP, PAD_OUT_ENABLE, PAD_OUT_HIGH);
Pinmux_Deinit(P4_0);
Pinmux_Deinit(P4_1);
Pinmux_Deinit(P4_2);
Pinmux_Deinit(P4_3);
Pinmux_Config(SPI0_SCK_PIN, SPI0_CLK_MASTER);
Pinmux_Config(SPI0_MOSI_PIN, SPI0_MO_MASTER);
Pinmux_Config(SPI0_MISO_PIN, SPI0_MI_MASTER);
Pinmux_Config(SPI0_CS_PIN, SPI0_SS_N_0_MASTER);
}
/**
* @brief Initialize spi peripheral.
* @param No parameter.
* @return void
*/
void driver_spi_init(void)
{
RCC_PeriphClockCmd(APBPeriph_SPI0, APBPeriph_SPI0_CLOCK, ENABLE);
SPI_InitTypeDef SPI_InitStruct;
SPI_StructInit(&SPI_InitStruct);
SPI_InitStruct.SPI_Direction = SPI_Direction_EEPROM;
SPI_InitStruct.SPI_Mode = SPI_Mode_Master;
SPI_InitStruct.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStruct.SPI_CPOL = SPI_CPOL_High;
SPI_InitStruct.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStruct.SPI_BaudRatePrescaler = 50;
/* SPI_Direction_EEPROM mode read data length. */
SPI_InitStruct.SPI_RxThresholdLevel = 1 - 1;/* Flash id length = 3*/
SPI_InitStruct.SPI_NDF = 1 - 1;/* Flash id length = 3*/
/* cause SPI_INT_RXF interrupt if data length in receive FIFO >= SPI_RxThresholdLevel + 1*/
SPI_InitStruct.SPI_FrameFormat = SPI_Frame_Motorola;
SPI_Init(SPI0, &SPI_InitStruct);
SPI_Cmd(SPI0, ENABLE);
/* detect receive data */
SPI_INTConfig(SPI0, SPI_INT_RXF, ENABLE);
/* Config SPI interrupt */
NVIC_InitTypeDef NVIC_InitStruct;
NVIC_InitStruct.NVIC_IRQChannel = SPI0_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPriority = 3;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStruct);
}
/**
* @brief Demo code of operation about spi.
* @param No parameter.
* @return void
*/
void spi_demo(void)
{
uint8_t id[10];
APP_PRINT_INFO0("[io_spi] spi_demo: Read flash id.");
spi_flash_read_id(DEVICE_ID, id);
flash_id_type = 0;
}
/**
* @brief Handle i2c data function.
* @param No parameter.
* @return void
*/
void io_spi_handle_msg(T_IO_MSG *io_spi_msg)
{
uint8_t *p_buf = io_spi_msg->u.buf;
uint8_t data_Length = p_buf[0];
APP_PRINT_INFO2("[io_spi] io_spi_handle_msg: data_Length = %d, data = %b ", data_Length,
TRACE_BINARY(data_Length, &p_buf[1]));
uint8_t id[1];
flash_id_type++;
if (flash_id_type < 3)
{
spi_flash_read_id((Flash_ID_Type)flash_id_type, id);
}
}
/**
* @brief Handle i2c data function.
* @param No parameter.
* @return void
*/
void io_handle_spi_msg(T_IO_MSG *io_spi_msg)
{
io_spi_handle_msg(io_spi_msg);
}
/**
* @brief SPI0 interrupt handle function.
* @param None.
* @return None.
*/
void SPI0_Handler(void)
{
volatile uint8_t data_len = 0;
volatile uint8_t SPI_ReadINTBuf[70] = {0};
if (SPI_GetINTStatus(SPI0, SPI_INT_RXF) == SET)
{
SPI_ClearINTPendingBit(SPI0, SPI_INT_RXF);
while (SPI_GetRxFIFOLen(SPI0) < Flash_ID_Length);
data_len = SPI_GetRxFIFOLen(SPI0);
Flash_Data[0] = data_len;
for (uint8_t i = 0; i < data_len; i++)
{
/* Must read all data in receive FIFO , otherwise cause SPI_INT_RXF interrupt again. */
Flash_Data[1 + i] = SPI_ReceiveData(SPI0);
}
T_IO_MSG int_spi_msg;
int_spi_msg.type = IO_MSG_TYPE_SPI;
int_spi_msg.subtype = 0;
int_spi_msg.u.buf = (void *)(Flash_Data);
if (false == app_send_msg_to_apptask(&int_spi_msg))
{
APP_PRINT_ERROR0("[io_spi] SPI0_Handler: Send int_spi_msg failed!");
SPI_ClearINTPendingBit(SPI0, SPI_INT_RXF);
//Add user code here!
return;
}
}
}
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