diff options
Diffstat (limited to 'src/sample/io_sample/SPI/Interrupt/io_spi.c')
| -rw-r--r-- | src/sample/io_sample/SPI/Interrupt/io_spi.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/src/sample/io_sample/SPI/Interrupt/io_spi.c b/src/sample/io_sample/SPI/Interrupt/io_spi.c new file mode 100644 index 0000000..fb96efc --- /dev/null +++ b/src/sample/io_sample/SPI/Interrupt/io_spi.c @@ -0,0 +1,165 @@ +/** +********************************************************************************************************* +* 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; + } + } +} |