201 lines
6.2 KiB
C
201 lines
6.2 KiB
C
#include <stdio.h>
|
||
#include <string.h>
|
||
#include "freertos/FreeRTOS.h"
|
||
#include "freertos/task.h"
|
||
#include "esp_timer.h"
|
||
#include "esp_lcd_panel_io_i80_hub75.h"
|
||
#include "esp_lcd_panel_ops.h"
|
||
#include "driver/gpio.h"
|
||
#include "esp_err.h"
|
||
#include "esp_log.h"
|
||
#include "esp_check.h"
|
||
#include "esp_rom_sys.h"
|
||
#include "hal/ledc_hal.h"
|
||
#include "driver/ledc.h"
|
||
|
||
|
||
static const char *TAG = "led matrix";
|
||
|
||
#define HUB75_CLOCK_HZ (10 * 1000 * 1000)
|
||
#define HUB75_MAX_SCAN_TIMES (8) /* 扫描次数是8次，也就是每一行会被扫8次，用于全彩显示 */
|
||
#define HUB75_MAX_SCAN_LINE (8) /* 最多扫描行 */
|
||
#define HUB75_MAX_TRANSFER_DATA_NUM (128) /* 最多发送128个uint16数据 */
|
||
#define HUB75_MAX_TRANSFER_BUTES (HUB75_MAX_TRANSFER_DATA_NUM * 2)
|
||
|
||
#define HUB75_LINE_ADDR_A_PIN_NUM 33
|
||
#define HUB75_LINE_ADDR_B_PIN_NUM 34
|
||
#define HUB75_LINE_ADDR_C_PIN_NUM 35
|
||
#define HUB75_LINE_ADDR_D_PIN_NUM 36
|
||
#define HUB75_LAT_PIN_NUM 8
|
||
#define HUB75_OE_PIN_NUM 21
|
||
#define HUB75_CLK_PIN_NUM 7
|
||
|
||
#define HUB75_G0 1
|
||
#define HUB75_R0 2
|
||
#define HUB75_B0 3
|
||
#define HUB75_G1 4
|
||
#define HUB75_R1 5
|
||
#define HUB75_B1 6
|
||
#define HUB75_G2 37
|
||
#define HUB75_R2 38
|
||
#define HUB75_B2 39
|
||
#define HUB75_G3 40
|
||
#define HUB75_R3 41
|
||
#define HUB75_B3 42
|
||
|
||
#define PSRAM_DATA_ALIGNMENT 64
|
||
|
||
typedef unsigned char uint8_t;
|
||
typedef unsigned short int uint16_t;
|
||
|
||
static int line = 0; /* 本次扫描行，32行16扫，一次显示两行 */
|
||
|
||
esp_lcd_i80_hub75_bus_handle_t i80_bus = NULL;
|
||
esp_lcd_panel_io_handle_t io_handle = NULL;
|
||
void led_matrix_i80_hub75_bus_init(void)
|
||
{
|
||
/* 8080总线配置 */
|
||
ESP_LOGI(TAG, "Initialize Intel 8080 bus");
|
||
esp_lcd_i80_hub75_bus_config_t bus_config = {
|
||
.clk_src = HUB75_CLK_PIN_NUM,
|
||
.wr_gpio_num = HUB75_CLK_PIN_NUM,
|
||
.data_gpio_nums = {
|
||
HUB75_R0,
|
||
HUB75_G0,
|
||
HUB75_B0,
|
||
HUB75_R1,
|
||
HUB75_G1,
|
||
HUB75_B1,
|
||
HUB75_R2,
|
||
HUB75_G2,
|
||
HUB75_B2,
|
||
HUB75_R3,
|
||
HUB75_G3,
|
||
HUB75_B3,
|
||
-1,
|
||
-1,
|
||
-1,
|
||
-1,
|
||
},
|
||
.bus_width = 16,
|
||
.max_transfer_bytes = HUB75_MAX_TRANSFER_BUTES, /* 每次发一行 */
|
||
.max_scan_line = HUB75_MAX_SCAN_LINE,
|
||
.max_scan_times = HUB75_MAX_SCAN_TIMES,
|
||
.psram_trans_align = PSRAM_DATA_ALIGNMENT,
|
||
.sram_trans_align = 4,
|
||
};
|
||
ESP_ERROR_CHECK(esp_lcd_new_i80_hub75_bus(&bus_config, &i80_bus));
|
||
|
||
/* 8080IO设备申请 */
|
||
esp_lcd_panel_io_i80_hub75_config_t io_config = {
|
||
.cs_gpio_num = -1,
|
||
.pclk_hz = HUB75_CLOCK_HZ,
|
||
.trans_queue_depth = 10,
|
||
.flags = {
|
||
.pclk_idle_low = 1,
|
||
},
|
||
.on_color_trans_done = NULL,
|
||
.user_ctx = NULL,
|
||
.lcd_cmd_bits = 0,
|
||
.lcd_param_bits = 0,
|
||
};
|
||
ESP_ERROR_CHECK(esp_lcd_new_panel_io_i80_hub75(i80_bus, &io_config, &io_handle));
|
||
}
|
||
|
||
void led_matrix_addr_gpio_init(void)
|
||
{
|
||
gpio_config_t io_conf = {
|
||
.mode = GPIO_MODE_OUTPUT,
|
||
.pin_bit_mask = (1ULL << HUB75_LINE_ADDR_A_PIN_NUM) |
|
||
(1ULL << HUB75_LINE_ADDR_B_PIN_NUM) |
|
||
(1ULL << HUB75_LINE_ADDR_C_PIN_NUM) |
|
||
(1ULL << HUB75_LINE_ADDR_D_PIN_NUM),
|
||
};
|
||
ESP_ERROR_CHECK(gpio_config(&io_conf));
|
||
}
|
||
|
||
|
||
#define LEDC_MODE LEDC_LOW_SPEED_MODE
|
||
#define LEDC_TIMER LEDC_TIMER_0
|
||
#define LEDC_DUTY_RES LEDC_TIMER_11_BIT
|
||
#define LEDC_FREQUENCY (3840) /* 60 * 8 * 8 */
|
||
|
||
#define LEDC_DUTY_OE (2040) /* 先低后高，前面有效，控制亮度 */
|
||
#define LEDC_DUTY_LAT (2048 - 5) /* 先高后低锁存 */
|
||
|
||
static void IRAM_ATTR ledc_timer_ovf_isr(void *arg);
|
||
extern esp_err_t ledc_set_timer_ovf_intr(ledc_mode_t speed_mode, ledc_channel_t channel, int enbale);
|
||
esp_err_t ledc_clear_timer_ovf_intr_status(ledc_mode_t speed_mode, ledc_channel_t channel);
|
||
static ledc_isr_handle_t s_ledc_time_isr_handle = NULL;
|
||
|
||
esp_err_t led_matrix_oe_lat_ledc_init(void)
|
||
{
|
||
ESP_LOGI(TAG, "led_matrix_oe_lat_ledc_init");
|
||
|
||
ledc_timer_config_t ledc_timer = {
|
||
.speed_mode = LEDC_MODE,
|
||
.timer_num = LEDC_TIMER,
|
||
.duty_resolution = LEDC_DUTY_RES,
|
||
.freq_hz = LEDC_FREQUENCY,
|
||
.clk_cfg = LEDC_AUTO_CLK};
|
||
ESP_ERROR_CHECK(ledc_timer_config(&ledc_timer));
|
||
|
||
ledc_channel_config_t ledc_channel_oe = {
|
||
.speed_mode = LEDC_MODE,
|
||
.channel = LEDC_CHANNEL_0,
|
||
.timer_sel = LEDC_TIMER,
|
||
.intr_type = LEDC_INTR_DISABLE,
|
||
.gpio_num = HUB75_OE_PIN_NUM,
|
||
.duty = LEDC_DUTY_OE,
|
||
.flags.output_invert = 1,
|
||
.hpoint = 0};
|
||
ledc_channel_config_t ledc_channel_lat = {
|
||
.speed_mode = LEDC_MODE,
|
||
.channel = LEDC_CHANNEL_1,
|
||
.timer_sel = LEDC_TIMER,
|
||
.intr_type = LEDC_INTR_DISABLE,
|
||
.gpio_num = HUB75_LAT_PIN_NUM,
|
||
.duty = LEDC_DUTY_LAT,
|
||
.flags.output_invert = 0,
|
||
.hpoint = 0};
|
||
ESP_ERROR_CHECK(ledc_channel_config(&ledc_channel_oe));
|
||
ESP_ERROR_CHECK(ledc_channel_config(&ledc_channel_lat));
|
||
|
||
/* 中断配置 */
|
||
ledc_set_timer_ovf_intr(LEDC_MODE, LEDC_TIMER, false);
|
||
int isr_flags = ESP_INTR_FLAG_LEVEL2;
|
||
int ret = ledc_isr_register(ledc_timer_ovf_isr, NULL, isr_flags, &s_ledc_time_isr_handle);
|
||
ESP_GOTO_ON_ERROR(ret, err, TAG, "install interrupt failed");
|
||
ledc_set_timer_ovf_intr(LEDC_MODE, LEDC_TIMER, true);
|
||
|
||
return ESP_OK;
|
||
err:
|
||
return ESP_FAIL;
|
||
}
|
||
|
||
static void IRAM_ATTR ledc_timer_ovf_isr(void *arg)
|
||
{
|
||
ledc_clear_timer_ovf_intr_status(LEDC_MODE, LEDC_TIMER);
|
||
hub75_send_line(io_handle, 0, 0);
|
||
}
|
||
|
||
|
||
void app_main(void)
|
||
{
|
||
led_matrix_i80_hub75_bus_init();
|
||
led_matrix_addr_gpio_init();
|
||
|
||
test_init_buf(i80_bus);
|
||
gpio_set_level(HUB75_LINE_ADDR_A_PIN_NUM, line & 1); /* 行地址，A是低位（待求证） */
|
||
gpio_set_level(HUB75_LINE_ADDR_B_PIN_NUM, (line >> 1) & 1);
|
||
gpio_set_level(HUB75_LINE_ADDR_C_PIN_NUM, (line >> 2) & 1);
|
||
gpio_set_level(HUB75_LINE_ADDR_D_PIN_NUM, (line >> 3) & 1);
|
||
ESP_LOGI(TAG, "1");
|
||
led_matrix_oe_lat_ledc_init();
|
||
|
||
while (1) {
|
||
vTaskDelay(pdMS_TO_TICKS(1000));
|
||
}
|
||
|
||
}
|