157 lines
4.2 KiB
C++
157 lines
4.2 KiB
C++
#include "cmt_spi3.h"
|
|
#include <Arduino.h>
|
|
#include <driver/spi_master.h>
|
|
#include <SpiManager.h>
|
|
|
|
SemaphoreHandle_t paramLock = NULL;
|
|
#define SPI_PARAM_LOCK() \
|
|
do { \
|
|
} while (xSemaphoreTake(paramLock, portMAX_DELAY) != pdPASS)
|
|
#define SPI_PARAM_UNLOCK() xSemaphoreGive(paramLock)
|
|
|
|
spi_device_handle_t spi_reg, spi_fifo;
|
|
|
|
void cmt_spi3_init(const int8_t pin_sdio, const int8_t pin_clk, const int8_t pin_cs, const int8_t pin_fcs, const int32_t spi_speed)
|
|
{
|
|
paramLock = xSemaphoreCreateMutex();
|
|
|
|
spi_host_device_t host_device;
|
|
if (!SpiManagerInst.claim_bus(host_device))
|
|
ESP_ERROR_CHECK(ESP_FAIL);
|
|
|
|
spi_bus_config_t buscfg = {
|
|
.mosi_io_num = pin_sdio,
|
|
.miso_io_num = -1, // single wire MOSI/MISO
|
|
.sclk_io_num = pin_clk,
|
|
.quadwp_io_num = -1,
|
|
.quadhd_io_num = -1,
|
|
.data4_io_num = -1,
|
|
.data5_io_num = -1,
|
|
.data6_io_num = -1,
|
|
.data7_io_num = -1,
|
|
.max_transfer_sz = 32,
|
|
.flags = 0,
|
|
.intr_flags = 0,
|
|
};
|
|
ESP_ERROR_CHECK(spi_bus_initialize(host_device, &buscfg, SPI_DMA_DISABLED));
|
|
|
|
spi_device_interface_config_t devcfg = {
|
|
.command_bits = 1,
|
|
.address_bits = 7,
|
|
.dummy_bits = 0,
|
|
.mode = 0, // SPI mode 0
|
|
.duty_cycle_pos = 0,
|
|
.cs_ena_pretrans = 1,
|
|
.cs_ena_posttrans = 1,
|
|
.clock_speed_hz = spi_speed,
|
|
.input_delay_ns = 0,
|
|
.spics_io_num = pin_cs,
|
|
.flags = SPI_DEVICE_HALFDUPLEX | SPI_DEVICE_3WIRE,
|
|
.queue_size = 1,
|
|
.pre_cb = nullptr,
|
|
.post_cb = nullptr,
|
|
};
|
|
ESP_ERROR_CHECK(spi_bus_add_device(host_device, &devcfg, &spi_reg));
|
|
|
|
// FiFo
|
|
spi_device_interface_config_t devcfg2 = {
|
|
.command_bits = 0,
|
|
.address_bits = 0,
|
|
.dummy_bits = 0,
|
|
.mode = 0, // SPI mode 0
|
|
.duty_cycle_pos = 0,
|
|
.cs_ena_pretrans = 2,
|
|
.cs_ena_posttrans = static_cast<uint8_t>(2 * spi_speed / 1000000), // >2 us
|
|
.clock_speed_hz = spi_speed,
|
|
.input_delay_ns = 0,
|
|
.spics_io_num = pin_fcs,
|
|
.flags = SPI_DEVICE_HALFDUPLEX | SPI_DEVICE_3WIRE,
|
|
.queue_size = 1,
|
|
.pre_cb = nullptr,
|
|
.post_cb = nullptr,
|
|
};
|
|
ESP_ERROR_CHECK(spi_bus_add_device(host_device, &devcfg2, &spi_fifo));
|
|
}
|
|
|
|
void cmt_spi3_write(const uint8_t addr, const uint8_t data)
|
|
{
|
|
spi_transaction_t t = {
|
|
.flags = 0,
|
|
.cmd = 0,
|
|
.addr = addr,
|
|
.length = 8,
|
|
.rxlength = 0,
|
|
.user = nullptr,
|
|
.tx_buffer = &data,
|
|
.rx_buffer = nullptr,
|
|
};
|
|
SPI_PARAM_LOCK();
|
|
ESP_ERROR_CHECK(spi_device_polling_transmit(spi_reg, &t));
|
|
SPI_PARAM_UNLOCK();
|
|
}
|
|
|
|
uint8_t cmt_spi3_read(const uint8_t addr)
|
|
{
|
|
uint8_t data;
|
|
spi_transaction_t t = {
|
|
.flags = 0,
|
|
.cmd = 1,
|
|
.addr = addr,
|
|
.length = 0,
|
|
.rxlength = 8,
|
|
.user = nullptr,
|
|
.tx_buffer = nullptr,
|
|
.rx_buffer = &data,
|
|
};
|
|
SPI_PARAM_LOCK();
|
|
ESP_ERROR_CHECK(spi_device_polling_transmit(spi_reg, &t));
|
|
SPI_PARAM_UNLOCK();
|
|
return data;
|
|
}
|
|
|
|
void cmt_spi3_write_fifo(const uint8_t* buf, const uint16_t len)
|
|
{
|
|
spi_transaction_t t = {
|
|
.flags = 0,
|
|
.cmd = 0,
|
|
.addr = 0,
|
|
.length = 8,
|
|
.rxlength = 0,
|
|
.user = nullptr,
|
|
.tx_buffer = nullptr,
|
|
.rx_buffer = nullptr,
|
|
};
|
|
|
|
SPI_PARAM_LOCK();
|
|
spi_device_acquire_bus(spi_fifo, portMAX_DELAY);
|
|
for (uint8_t i = 0; i < len; i++) {
|
|
t.tx_buffer = buf + i;
|
|
ESP_ERROR_CHECK(spi_device_polling_transmit(spi_fifo, &t));
|
|
}
|
|
spi_device_release_bus(spi_fifo);
|
|
SPI_PARAM_UNLOCK();
|
|
}
|
|
|
|
void cmt_spi3_read_fifo(uint8_t* buf, const uint16_t len)
|
|
{
|
|
spi_transaction_t t = {
|
|
.flags = 0,
|
|
.cmd = 0,
|
|
.addr = 0,
|
|
.length = 0,
|
|
.rxlength = 8,
|
|
.user = nullptr,
|
|
.tx_buffer = nullptr,
|
|
.rx_buffer = nullptr,
|
|
};
|
|
|
|
SPI_PARAM_LOCK();
|
|
spi_device_acquire_bus(spi_fifo, portMAX_DELAY);
|
|
for (uint8_t i = 0; i < len; i++) {
|
|
t.rx_buffer = buf + i;
|
|
ESP_ERROR_CHECK(spi_device_polling_transmit(spi_fifo, &t));
|
|
}
|
|
spi_device_release_bus(spi_fifo);
|
|
SPI_PARAM_UNLOCK();
|
|
}
|