[bsp][ESP32][esp32c3] add spi driver
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wumingzi
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@ -47,6 +47,11 @@ menu "Onboard Peripheral Drivers"
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default 20 if BSP_BOARD_LUATOS_ESP32C3
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depends on BSP_USING_UART
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config RT_BSP_SPI_CS_PIN
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int "SPI GPIO PIN SET"
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default 10 if BSP_BOARD_LUATOS_ESP32C3
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depends on BSP_USING_SPI2
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endmenu
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@ -72,6 +77,16 @@ menu "On-chip Peripheral Drivers"
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default n
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endif
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menuconfig BSP_USING_SPI
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bool "Enable SPI"
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default n
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select RT_USING_SPI
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if BSP_USING_SPI
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config BSP_USING_SPI2
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bool "Enable SPI2"
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default n
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endif
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config BSP_USING_WIFI
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bool "Enable WIFI"
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select RT_USING_WIFI
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@ -138,5 +153,3 @@ config BSP_ENABLE_GDBSTUB
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default n
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endmenu
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@ -27,6 +27,9 @@ if GetDepend('BSP_USING_HWTIMER'):
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if GetDepend('BSP_USING_WIFI'):
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src += ['drv_wifi.c']
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if GetDepend('BSP_USING_SPI'):
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src += ['drv_spi.c']
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group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH)
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Return('group')
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@ -0,0 +1,177 @@
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/*
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* Copyright (c) 2006-2024 RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2024-10-08 wumingzi first implementation
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include "rtdef.h"
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#include "rttypes.h"
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#include "sdkconfig.h"
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#include "hal/spi_hal.h" /*bsp/ESP32_C3/packages/ESP-IDF-latest/components/hal/include/hal/spi_types.h*/
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#include "driver/gpio.h" /*bsp/ESP32_C3/packages/ESP-IDF-latest/components/driver/include/driver/gpio.h*/
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#include "driver/spi_master.h"
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#include "drv_spi.h"
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#ifdef RT_USING_SPI
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#ifdef BSP_USING_SPI2
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#define LOG_TAG "drv.spi"
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#include <rtdbg.h>
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static struct rt_spi_bus spi_bus2;
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static spi_device_handle_t spi;
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static spi_bus_config_t buscfg;
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static struct esp32_spi spi_bus_obj[] = {
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#ifdef BSP_USING_SPI2
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{
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.bus_name = "spi2",
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.spi_bus = &spi_bus2,
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.esp32_spi_bus_cfg = &buscfg,
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},
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#endif /* BSP_USING_SPI2 */
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};
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/* private rt-thread spi ops function */
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static rt_err_t spi_configure(struct rt_spi_device* device, struct rt_spi_configuration* configuration);
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static rt_ssize_t spixfer(struct rt_spi_device* device, struct rt_spi_message* message);
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static struct rt_spi_ops esp32_spi_ops =
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{
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.configure = spi_configure,
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.xfer = spixfer,
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};
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/**
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* @brief SPI Initialization
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* @param esp32_spi: SPI BUS
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* @retval None
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*/
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static void esp32_spi_init(struct esp32_spi *esp32_spi)
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{
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spi_configure(NULL,NULL);
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}
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static void spi_pin_mode(rt_base_t pin)
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{
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gpio_config_t io_conf;
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io_conf.intr_type = GPIO_INTR_DISABLE;
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io_conf.mode = GPIO_MODE_OUTPUT;
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io_conf.pin_bit_mask = (1ULL << pin);
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io_conf.pull_down_en = 0;
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io_conf.pull_up_en = 1;
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}
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static rt_err_t spi_configure(struct rt_spi_device* device,
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struct rt_spi_configuration* configuration)
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{
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/* spi_pin_mode(RT_BSP_SPI_CS_PIN);*/
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static spi_bus_config_t buscfg =
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{
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.miso_io_num=SPI2_IOMUX_PIN_NUM_MISO, /*MISO*/
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.mosi_io_num=SPI2_IOMUX_PIN_NUM_MOSI, /*MOSI*/
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.sclk_io_num=SPI2_IOMUX_PIN_NUM_CLK, /*CLK*/
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.quadwp_io_num=-1, /*不使用*/
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.quadhd_io_num=-1, /*不使用*/
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.max_transfer_sz=4092 /*最大传送数据长度*/
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};
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esp_err_t err = spi_bus_initialize(SPI2_HOST, &buscfg, SPI_DMA_CH_AUTO);
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ESP_ERROR_CHECK(err);
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static spi_device_interface_config_t devcfg={
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.clock_speed_hz = SPI_MASTER_FREQ_8M,
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.mode = 0,
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.spics_io_num = RT_BSP_SPI_CS_PIN,
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.queue_size = 7,
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};
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err = spi_bus_add_device(SPI2_HOST, &devcfg, &spi);
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ESP_ERROR_CHECK(err);
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spi_bus_obj[0].bus_name = "spi2";
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spi_bus_obj[0].spi_bus = &spi_bus2;
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spi_bus_obj[0].esp32_spi_bus_cfg = &buscfg;
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return RT_EOK;
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};
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static rt_ssize_t spixfer(struct rt_spi_device* device, struct rt_spi_message* message)
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{
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RT_ASSERT(device != NULL);
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RT_ASSERT(message != NULL);
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static spi_transaction_t trans;
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trans.tx_buffer = message->send_buf;
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trans.rx_buffer = message->recv_buf;
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trans.length = message->length;
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trans.rxlength = message->length;
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spi_device_acquire_bus(spi, portMAX_DELAY);
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esp_err_t err = spi_device_polling_transmit(spi, &trans);
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spi_device_release_bus(spi);
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ESP_ERROR_CHECK(err);
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return RT_EOK;
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};
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/**
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* Attach the spi device to SPI bus, this function must be used after initialization.
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*/
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rt_err_t rt_hw_spi_device_attach(const char *bus_name, const char *device_name, rt_base_t cs_pin)
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{
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RT_ASSERT(bus_name != RT_NULL);
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RT_ASSERT(device_name != RT_NULL);
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rt_err_t result;rt_device_t busp = RT_NULL;
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struct rt_spi_device *spi_device;
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/* attach the device to spi bus*/
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spi_device = (struct rt_spi_device *)rt_malloc(sizeof(struct rt_spi_device));
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RT_ASSERT(spi_device != RT_NULL);
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result = rt_spi_bus_attach_device(spi_device, device_name, bus_name, (void *)cs_pin);
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if (result != RT_EOK)
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{
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LOG_E("%s attach to %s faild, %d\n", device_name, bus_name, result);
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}
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RT_ASSERT(result == RT_EOK);
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LOG_D("%s attach to %s done", device_name, bus_name);
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return result;
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}
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int rt_hw_spi_init(void)
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{
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int result = 0;
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spi_bus_obj[0].spi_bus->parent.user_data = (void *)&spi_bus_obj[0];
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result = rt_spi_bus_register(spi_bus_obj[0].spi_bus, spi_bus_obj[0].bus_name, &esp32_spi_ops);
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RT_ASSERT(result == RT_EOK);
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LOG_D("%s bus init done", spi_bus_obj[i].bus_name);
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return result;
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}
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INIT_BOARD_EXPORT(rt_hw_spi_init);
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#endif /* BSP_USING_SPI0 || BSP_USING_SPI1 || BSP_USING_SPI2 || BSP_USING_SPI3 || BSP_USING_SPI4*/
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#endif /* RT_USING_SPI */
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@ -0,0 +1,36 @@
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/*
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* Copyright (c) 2006-2024 RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2024-10-08 wumingzi first implementation
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*/
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#ifndef __DRV_SPI_H__
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#define __DRV_SPI_H__
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#include <rthw.h>
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#include <rtthread.h>
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#include <board.h>
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#include "driver/spi_common.h" /*bsp/ESP32_C3/packages/ESP-IDF-latest/components/driver/include/driver/spi_common.h*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* esp32 spi dirver class */
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struct esp32_spi
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{
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char *bus_name;
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struct rt_spi_bus *spi_bus;
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spi_bus_config_t* esp32_spi_bus_cfg;
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};
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rt_err_t rt_hw_spi_device_attach(const char *bus_name, const char *device_name, rt_base_t cs_pin);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __DRV_SPI_H__ */
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