1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
#include <stdio.h>
#include "driver/adc.h"
#include "driver/gpio.h"
#include "driver/i2c.h"
#include "driver/spi_common.h"
#include "driver/spi_master.h"
#include "esp_adc_cal.h"
#include "esp_log.h"
#include "gpio-expander.h"
#include "battery.h"
#include "hal/adc_types.h"
#include "hal/gpio_types.h"
#include "hal/spi_types.h"
#define I2C_SDA_IO (GPIO_NUM_0)
#define I2C_SCL_IO (GPIO_NUM_4)
#define I2C_CLOCK_HZ (400000)
#define SPI_SDI_IO (GPIO_NUM_19)
#define SPI_SDO_IO (GPIO_NUM_23)
#define SPI_SCLK_IO (GPIO_NUM_18)
#define SPI_QUADWP_IO (GPIO_NUM_22)
#define SPI_QUADHD_IO (GPIO_NUM_21)
#define I2S_SCK_IO (GPIO_NUM_25)
#define I2S_BCK_IO (GPIO_NUM_26)
#define I2S_LRCK_IO (GPIO_NUM_27)
#define I2S_DIN_IO (GPIO_NUM_5)
static const char* TAG = "MAIN";
esp_err_t init_i2c(void) {
i2c_port_t port = I2C_NUM_0;
i2c_config_t config = {
.mode = I2C_MODE_MASTER,
.sda_io_num = I2C_SDA_IO,
.scl_io_num = I2C_SCL_IO,
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.master = {
.clk_speed = I2C_CLOCK_HZ,
},
// No requirements for the clock.
.clk_flags = 0,
};
ESP_ERROR_CHECK(i2c_param_config(port, &config));
ESP_ERROR_CHECK(i2c_driver_install(port, config.mode, 0, 0, 0));
// TODO: INT line
return ESP_OK;
}
esp_err_t init_spi(void) {
spi_bus_config_t config = {
.mosi_io_num = SPI_SDO_IO,
.miso_io_num = SPI_SDI_IO,
.sclk_io_num = SPI_SCLK_IO,
.quadwp_io_num = SPI_QUADWP_IO,
.quadhd_io_num = SPI_QUADHD_IO,
// Unused
.data4_io_num = -1,
.data5_io_num = -1,
.data6_io_num = -1,
.data7_io_num = -1,
// Use the DMA default size.
.max_transfer_sz = 0,
// TODO: check flags
.flags = 0,
.intr_flags = 0,
};
ESP_ERROR_CHECK(spi_bus_initialize(VSPI_HOST, &config, SPI_DMA_CH_AUTO));
// TODO: CS lines
// TODO: add devices to the bus (sd card and display)
return ESP_OK;
}
extern "C" void app_main(void)
{
ESP_LOGI(TAG, "Initialising peripherals");
init_i2c();
//init_spi();
ESP_LOGI(TAG, "Setting default GPIO state");
gay_ipod::GpioExpander expander;
// for debugging usb ic
//expander.set_sd_mux(gay_ipod::GpioExpander::USB);
ESP_ERROR_CHECK(expander.Write());
ESP_LOGI(TAG, "Init ADC");
ESP_ERROR_CHECK(gay_ipod::init_adc());
while (1) {
uint32_t battery = gay_ipod::read_battery_voltage();
expander.Read();
ESP_LOGI(TAG, "millivolts: %d, wall power? %d", battery, expander.charge_power_ok());
vTaskDelay(pdMS_TO_TICKS(1000));
ESP_ERROR_CHECK(expander.Write());
}
}
|
