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93 lines
2.0 KiB
93 lines
2.0 KiB
#include <stdio.h>
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#include "gpio-expander.h"
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#include "esp_log.h"
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#include "driver/gpio.h"
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#include "driver/i2c.h"
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#include "driver/spi_common.h"
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#include "driver/spi_master.h"
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#include "gpio-expander.h"
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#include "hal/gpio_types.h"
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#include "hal/spi_types.h"
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#define I2C_SDA_IO (GPIO_NUM_0)
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#define I2C_SCL_IO (GPIO_NUM_4)
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#define I2C_CLOCK_HZ (400000)
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#define SPI_SDI_IO (GPIO_NUM_19)
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#define SPI_SDO_IO (GPIO_NUM_23)
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#define SPI_SCLK_IO (GPIO_NUM_18)
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#define SPI_QUADWP_IO (GPIO_NUM_22)
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#define SPI_QUADHD_IO (GPIO_NUM_21)
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#define I2S_SCK_IO (GPIO_NUM_25)
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#define I2S_BCK_IO (GPIO_NUM_26)
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#define I2S_LRCK_IO (GPIO_NUM_27)
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#define I2S_DIN_IO (GPIO_NUM_5)
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static const char* TAG = "MAIN";
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esp_err_t init_i2c(void) {
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i2c_port_t port = I2C_NUM_0;
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i2c_config_t config = {
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.mode = I2C_MODE_MASTER,
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.sda_io_num = I2C_SDA_IO,
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.scl_io_num = I2C_SCL_IO,
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.sda_pullup_en = GPIO_PULLUP_ENABLE,
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.scl_pullup_en = GPIO_PULLUP_ENABLE,
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.master = {
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.clk_speed = I2C_CLOCK_HZ,
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},
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// TODO: check flags
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.clk_flags = 0,
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};
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ESP_ERROR_CHECK(i2c_param_config(port, &config));
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ESP_ERROR_CHECK(i2c_driver_install(port, config.mode, 0, 0, 0));
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// TODO: INT line
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// TODO: add devices to the bus (DAC and GPIO expander)
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return ESP_OK;
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}
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esp_err_t init_spi(void) {
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spi_bus_config_t config = {
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.mosi_io_num = SPI_SDO_IO,
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.miso_io_num = SPI_SDI_IO,
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.sclk_io_num = SPI_SCLK_IO,
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.quadwp_io_num = SPI_QUADWP_IO,
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.quadhd_io_num = SPI_QUADHD_IO,
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// Unused
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.data4_io_num = -1,
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.data5_io_num = -1,
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.data6_io_num = -1,
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.data7_io_num = -1,
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// Use the DMA default size.
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.max_transfer_sz = 0,
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// TODO: check flags
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.flags = 0,
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.intr_flags = 0,
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};
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ESP_ERROR_CHECK(spi_bus_initialize(VSPI_HOST, &config, SPI_DMA_CH_AUTO));
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// TODO: CS lines
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// TODO: add devices to the bus (sd card and display)
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return ESP_OK;
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}
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extern "C" void app_main(void)
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{
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ESP_LOGI(TAG, "Initialising peripherals");
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init_i2c();
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init_spi();
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gay_ipod::GpioExpander expander;
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expander.Write();
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while (1) {}
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}
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