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@@ -6,10 +6,12 @@
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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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+ * 2024-10-08 wumingzi add custom configuration and support muti spi obj
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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+#include <time.h>
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#include "rtdef.h"
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#include "rttypes.h"
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@@ -20,6 +22,7 @@
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#include "driver/spi_master.h"
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#include "drv_spi.h"
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+#include "drivers/dev_spi.h"
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#ifdef RT_USING_SPI
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#ifdef BSP_USING_SPI2
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@@ -29,7 +32,6 @@
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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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-
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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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@@ -62,20 +64,9 @@ static void esp32_spi_init(struct esp32_spi *esp32_spi)
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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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-
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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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@@ -89,19 +80,87 @@ static rt_err_t spi_configure(struct rt_spi_device* device,
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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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+ static spi_device_interface_config_t devcfg;
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+ if(configuration->data_width == 8)
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+ {
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+ size_t length; /*/< Total data length, in bits*/
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+ size_t rxlength; /*/< Total data length received, should be not greater than ``length`` in full-duplex mode (0 defaults this to the value of ``length``)*/
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+ }
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+
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+ LOG_W("configuration->max_hz = %d \n",configuration->max_hz);
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+ if(configuration->max_hz >= SPI_MASTER_FREQ_80M)
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+ {
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+ devcfg.clock_speed_hz = SPI_MASTER_FREQ_80M; /*/< 80MHz*/
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+ }
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+ else if(configuration->max_hz >= SPI_MASTER_FREQ_40M)
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+ {
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+ devcfg.clock_speed_hz = SPI_MASTER_FREQ_40M; /*/< 40MHz*/
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+ }
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+ else if(configuration->max_hz >= SPI_MASTER_FREQ_26M)
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+ {
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+ devcfg.clock_speed_hz = SPI_MASTER_FREQ_26M; /*/< 26.67MHz*/
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+ }
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+ else if(configuration->max_hz >= SPI_MASTER_FREQ_20M)
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+ {
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+ devcfg.clock_speed_hz = SPI_MASTER_FREQ_20M; /*/< 20MHz*/
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+ }
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+ else if(configuration->max_hz >= SPI_MASTER_FREQ_16M)
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+ {
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+ devcfg.clock_speed_hz = SPI_MASTER_FREQ_16M; /*/< 16MHz*/
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+ }
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+ else if(configuration->max_hz >= SPI_MASTER_FREQ_13M)
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+ {
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+ devcfg.clock_speed_hz = SPI_MASTER_FREQ_13M; /*/< 13.33MHz*/
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+ }
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+ else if(configuration->max_hz >= SPI_MASTER_FREQ_11M)
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+ {
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+ devcfg.clock_speed_hz = SPI_MASTER_FREQ_11M; /*/< 11.43MHz*/
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+ }
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+ else if(configuration->max_hz >= SPI_MASTER_FREQ_10M)
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+ {
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+ devcfg.clock_speed_hz = SPI_MASTER_FREQ_10M; /*/< 10MHz*/
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+ }
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+ else if(configuration->max_hz >= SPI_MASTER_FREQ_9M)
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+ {
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+ devcfg.clock_speed_hz = SPI_MASTER_FREQ_9M ; /*/< 8.89MHz*/
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+ }
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+ else
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+ {
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+ devcfg.clock_speed_hz = SPI_MASTER_FREQ_8M ;
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+ }
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+
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+ switch (configuration->mode)
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+ {
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+ case RT_SPI_MODE_0: /*!< CPOL = 0, CPHA = 0 */
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+ devcfg.mode = 0;
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+ case RT_SPI_MODE_1: /*!< CPOL = 0, CPHA = 1 */
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+ devcfg.mode = 1;
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+ case RT_SPI_MODE_2: /*!< CPOL = 1, CPHA = 0 */
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+ devcfg.mode = 2;
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+ case RT_SPI_MODE_3: /*!< CPOL = 1, CPHA = 1 */
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+ devcfg.mode = 3;
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+ default:
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+ devcfg.mode = 0;
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+ }
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+
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+ /* todo: support changing cs_pin,queue_size or specifing spi_device_interface_config_t and
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+ * spi_transaction_t by resever data.Meanwhile finish the initialization of interrupt
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+ * callback function and dma.
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+ */
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+
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+ devcfg.spics_io_num = RT_BSP_SPI_CS_PIN;
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+ devcfg.queue_size = 7;
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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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+ /* Although there is only one spi bus object, it will be a template for other bsps of ESP32 series */
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+ for(int i = 0; i < sizeof(spi_bus_obj)/sizeof(spi_bus_obj[0]); i++)
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+ {
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+ spi_bus_obj[i].bus_name = "spi2";
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+ spi_bus_obj[i].spi_bus = &spi_bus2;
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+ spi_bus_obj[i].esp32_spi_bus_cfg = &buscfg;
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+ }
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return RT_EOK;
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};
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@@ -116,8 +175,8 @@ static rt_ssize_t spixfer(struct rt_spi_device* device, struct rt_spi_message* m
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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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+ trans.length = (message->length)*8;
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+ trans.rxlength = (message->length)*8;
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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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@@ -161,12 +220,15 @@ 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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+ for(int i = 0; i < sizeof(spi_bus_obj)/sizeof(spi_bus_obj[0]); i++)
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+ {
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+ spi_bus_obj[i].spi_bus->parent.user_data = (void *)&spi_bus_obj[i];
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+ result = rt_spi_bus_register(spi_bus_obj[i].spi_bus, spi_bus_obj[i].bus_name, &esp32_spi_ops);
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- RT_ASSERT(result == RT_EOK);
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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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+ LOG_D("%s bus init done", spi_bus_obj[i].bus_name);
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+ }
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return result;
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}
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@@ -174,4 +236,4 @@ int rt_hw_spi_init(void)
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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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+#endif /* RT_USING_SPI */
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