add littfs demo on tos_evb_aiot board
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mculover666
256
board/TencentOS_tiny_EVB_AIoT/BSP/Hardware/W25QXX-SPI/w25q64.c
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256
board/TencentOS_tiny_EVB_AIoT/BSP/Hardware/W25QXX-SPI/w25q64.c
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#include "w25q64.h"
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#if defined(USE_ST_HAL)
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static void spi_init(void)
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{
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// it will be called in main.
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// MX_SPIx_Init();
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}
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static void spi_cs_select(void)
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{
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HAL_GPIO_WritePin(SPI_CS_PORT, SPI_CS_PIN, GPIO_PIN_RESET);
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/* tCHSH: /CS Active Hold Time relative to CLK, min is 5 ns. */
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for (int i = 0; i < 50; i++) {
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__NOP();
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}
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}
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static void spi_cs_deselect(void)
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{
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HAL_GPIO_WritePin(SPI_CS_PORT, SPI_CS_PIN, GPIO_PIN_SET);
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/* tSHSL: /CS Deselect Time (for Array Read -> Array Read ->
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-> Erase or Program -> Read Status Registers), min is 10 ns. */
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for (int i = 0; i < 100; i++) {
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__NOP();
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}
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}
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static int spi_transmit(uint8_t *buf, uint16_t size)
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{
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HAL_StatusTypeDef status;
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status = HAL_SPI_Transmit(&SPI_Handle, buf, size, 100);
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return status == HAL_OK ? 0 : -1;
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}
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static int spi_receive(uint8_t *buf, uint16_t size)
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{
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HAL_StatusTypeDef status;
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status = HAL_SPI_Receive(&SPI_Handle, buf, size, 100);
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return status == HAL_OK ? 0 : -1;
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}
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#elif defined(USE_NXP_FSL)
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static void spi_init(void)
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{
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lpspi_master_config_t masterConfig;
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uint32_t srcClock_Hz;
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/* Set clock source for LPSPI */
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CLOCK_SetMux(kCLOCK_LpspiMux, LPSPI_CLOCK_SOURCE_SELECT);
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CLOCK_SetDiv(kCLOCK_LpspiDiv, LPSPI_CLOCK_SOURCE_DIVIDER);
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/* Master config */
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LPSPI_MasterGetDefaultConfig(&masterConfig);
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masterConfig.baudRate = TRANSFER_BAUDRATE;
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srcClock_Hz = LPSPI_MASTER_CLK_FREQ;
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LPSPI_MasterInit(SPI_Handle, &masterConfig, srcClock_Hz);
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}
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static void spi_cs_select(void)
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{
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GPIO_PinWrite(SPI_CS_PORT, SPI_CS_PIN, 0);
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/* tCHSH: /CS Active Hold Time relative to CLK, min is 5 ns. */
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for (int i = 0; i < 500; i++) {
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__NOP();
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}
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}
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static void spi_cs_deselect(void)
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{
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GPIO_PinWrite(SPI_CS_PORT, SPI_CS_PIN, 1);
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/* tSHSL: /CS Deselect Time (for Array Read -> Array Read ->
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-> Erase or Program -> Read Status Registers), min is 10 ns. */
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for (int i = 0; i < 1000; i++) {
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__NOP();
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}
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}
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static int spi_transmit(uint8_t *buf, uint16_t size)
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{
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status_t status;
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lpspi_transfer_t masterXfer;
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/* Start master transfer, transfer data to slave. */
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masterXfer.txData = buf;
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masterXfer.rxData = NULL;
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masterXfer.dataSize = size;
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masterXfer.configFlags = kLPSPI_MasterByteSwap;
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status = LPSPI_MasterTransferBlocking(SPI_Handle, &masterXfer);
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return status == kStatus_Success ? 0 : -1;
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}
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static int spi_receive(uint8_t *buf, uint16_t size)
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{
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status_t status;
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lpspi_transfer_t masterXfer;
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/* Start master transfer, receive data from slave */
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masterXfer.txData = NULL;
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masterXfer.rxData = buf;
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masterXfer.dataSize = size;
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masterXfer.configFlags = kLPSPI_MasterByteSwap;
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status = LPSPI_MasterTransferBlocking(SPI_Handle, &masterXfer);
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return status == kStatus_Success ? 0 : -1;
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}
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#endif /* USE_ST_HAL or USE_NXP_FSL */
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int w25qxx_init(void)
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{
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spi_init();
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return 0;
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}
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uint16_t w25qxx_read_deviceid(void)
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{
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uint8_t recv_buf[2] = {0};
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uint16_t device_id = 0;
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uint8_t send_data[4] = {ManufactDeviceID_CMD, 0x00, 0x00, 0x00};
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spi_cs_select();
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if (spi_transmit(send_data, 4) == 0) {
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if (spi_receive(recv_buf, 2) == 0) {
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device_id = (recv_buf[0] << 8) | recv_buf[1];
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}
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}
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spi_cs_deselect();
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return device_id;
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}
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static void w25qxx_wait_busy(void)
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{
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uint8_t cmd;
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uint8_t result;
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cmd = READ_STATU_REGISTER_1;
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spi_cs_select();
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spi_transmit(&cmd, 1);
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while (1) {
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spi_receive(&result, 1);
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if ((result & 0x01) != 0x01) {
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break;
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}
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}
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spi_cs_deselect();
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return;
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}
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int w25qxx_read(uint8_t* buffer, uint32_t start_addr, uint16_t nbytes)
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{
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uint8_t cmd[4];
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cmd[0] = READ_DATA_CMD;
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cmd[1] = (uint8_t)(start_addr >> 16);
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cmd[2] = (uint8_t)(start_addr >> 8);
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cmd[3] = (uint8_t)(start_addr);
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spi_cs_select();
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if (spi_transmit(cmd, 4) == 0) {
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if (spi_receive(buffer, nbytes) == 0) {
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spi_cs_deselect();
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return 0;
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}
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}
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spi_cs_deselect();
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return -1;
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}
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void w25qxx_write_enable(void)
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{
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uint8_t cmd = WRITE_ENABLE_CMD;
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spi_cs_select();
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spi_transmit(&cmd, 1);
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spi_cs_deselect();
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}
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void w25qxx_write_disable(void)
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{
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uint8_t cmd = WRITE_DISABLE_CMD;
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spi_cs_select();
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spi_transmit(&cmd, 1);
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spi_cs_deselect();
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}
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int w25qxx_erase_sector(uint32_t sector_addr)
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{
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uint8_t cmd[4];
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cmd[0] = SECTOR_ERASE_CMD;
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cmd[1] = (uint8_t)(sector_addr>>16);
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cmd[2] = (uint8_t)(sector_addr>>8);
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cmd[3] = (uint8_t)(sector_addr);
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w25qxx_wait_busy();
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w25qxx_write_enable();
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spi_cs_select();
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if (spi_transmit(cmd, 4) != 0) {
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spi_cs_deselect();
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return -1;
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}
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spi_cs_deselect();
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w25qxx_wait_busy();
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return 0;
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}
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int w25qxx_page_program(uint8_t* dat, uint32_t write_addr, uint16_t nbytes)
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{
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uint8_t cmd[4];
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cmd[0] = PAGE_PROGRAM_CMD;
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cmd[1] = (uint8_t)(write_addr >> 16);
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cmd[2] = (uint8_t)(write_addr >> 8);
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cmd[3] = (uint8_t)(write_addr);
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w25qxx_wait_busy();
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w25qxx_write_enable();
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spi_cs_select();
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if (spi_transmit(cmd, 4) != 0) {
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spi_cs_deselect();
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return -1;
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}
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if (spi_transmit(dat, nbytes) != 0) {
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spi_cs_deselect();
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return -1;
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}
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spi_cs_deselect();
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w25qxx_wait_busy();
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return 0;
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}
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@@ -0,0 +1,49 @@
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#ifndef _W25Q64_H_
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#define _W25Q64_H_
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//#define USE_ST_HAL
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#define USE_NXP_FSL
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#if defined(USE_ST_HAL)
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#include "spi.h"
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#define SPI_Handle hspi1
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#define SPI_CS_PORT GPIOA
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#define SPI_CS_PIN GPIO_PIN_4
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#elif defined(USE_NXP_FSL)
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#include "fsl_gpio.h"
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#include "fsl_lpspi.h"
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#define SPI_Handle LPSPI3
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#define SPI_CS_PORT GPIO1
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#define SPI_CS_PIN 3
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/* Select USB1 PLL PFD0 (720 MHz) as lpspi clock source */
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#define LPSPI_CLOCK_SOURCE_SELECT (1U)
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/* Clock divider for master lpspi clock source */
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#define LPSPI_CLOCK_SOURCE_DIVIDER (7U)
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/* 90MHz */
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#define LPSPI_MASTER_CLK_FREQ (CLOCK_GetFreq(kCLOCK_Usb1PllPfd0Clk) / (LPSPI_CLOCK_SOURCE_DIVIDER + 1U))
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/*! Transfer baudrate - 80M */
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#define TRANSFER_BAUDRATE 80000000U
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#endif /* USE_ST_HAL or USE_NXP_FSL */
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enum {
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ManufactDeviceID_CMD = 0x90,
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READ_STATU_REGISTER_1 = 0x05,
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READ_STATU_REGISTER_2 = 0x35,
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READ_DATA_CMD = 0x03,
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WRITE_ENABLE_CMD = 0x06,
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WRITE_DISABLE_CMD = 0x04,
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SECTOR_ERASE_CMD = 0x20,
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CHIP_ERASE_CMD = 0xc7,
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PAGE_PROGRAM_CMD = 0x02,
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};
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int w25qxx_init(void);
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uint16_t w25qxx_read_deviceid(void);
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int w25qxx_read(uint8_t* buffer, uint32_t start_addr, uint16_t nbytes);
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int w25qxx_erase_sector(uint32_t sector_addr);
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int w25qxx_page_program(uint8_t* dat, uint32_t write_addr, uint16_t nbytes);
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#endif
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