148 lines
4.6 KiB
C
148 lines
4.6 KiB
C
#include <stdio.h>
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_timer.h"
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#include "esp_lcd_panel_io_i80_hub75.h"
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#include "esp_lcd_panel_ops.h"
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#include "driver/gpio.h"
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#include "esp_err.h"
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#include "esp_log.h"
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#include "esp_rom_sys.h"
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static const char *TAG = "led matrix";
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#define HUB75_CLOCK_HZ (10 * 1000 * 1000)
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#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 */
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#define HUB75_MAX_SCAN_LINE (8) /* 最多扫描行 */
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#define HUB75_MAX_TRANSFER_DATA_NUM (128) /* 最多发送128个uint16数据 */
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#define HUB75_MAX_TRANSFER_BUTES (HUB75_MAX_TRANSFER_DATA_NUM * 2)
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#define HUB75_LINE_ADDR_A_PIN_NUM 33
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#define HUB75_LINE_ADDR_B_PIN_NUM 34
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#define HUB75_LINE_ADDR_C_PIN_NUM 35
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#define HUB75_LINE_ADDR_D_PIN_NUM 36
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#define HUB75_LAT_PIN_NUM 8
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#define HUB75_OE_PIN_NUM 21
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#define HUB75_CLK_PIN_NUM 7
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#define HUB75_G0 1
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#define HUB75_R0 2
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#define HUB75_B0 3
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#define HUB75_G1 4
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#define HUB75_R1 5
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#define HUB75_B1 6
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#define HUB75_G2 37
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#define HUB75_R2 38
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#define HUB75_B2 39
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#define HUB75_G3 40
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#define HUB75_R3 41
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#define HUB75_B3 42
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#define PSRAM_DATA_ALIGNMENT 64
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typedef unsigned char uint8_t;
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typedef unsigned short int uint16_t;
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static int line = 0; /* 本次扫描行，32行16扫，一次显示两行 */
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esp_lcd_i80_hub75_bus_handle_t i80_bus = NULL;
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esp_lcd_panel_io_handle_t io_handle = NULL;
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void led_matrix_i80_hub75_bus_init(void)
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{
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/* 8080总线配置 */
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ESP_LOGI(TAG, "Initialize Intel 8080 bus");
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esp_lcd_i80_hub75_bus_config_t bus_config = {
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.clk_src = HUB75_CLK_PIN_NUM,
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.wr_gpio_num = HUB75_CLK_PIN_NUM,
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.data_gpio_nums = {
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HUB75_R0,
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HUB75_G0,
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HUB75_B0,
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HUB75_R1,
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HUB75_G1,
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HUB75_B1,
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HUB75_R2,
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HUB75_G2,
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HUB75_B2,
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HUB75_R3,
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HUB75_G3,
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HUB75_B3,
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-1,
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-1,
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-1,
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-1,
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},
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.bus_width = 16,
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.max_transfer_bytes = HUB75_MAX_TRANSFER_BUTES, /* 每次发一行 */
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.max_scan_line = HUB75_MAX_SCAN_LINE,
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.max_scan_times = HUB75_MAX_SCAN_TIMES,
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.psram_trans_align = PSRAM_DATA_ALIGNMENT,
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.sram_trans_align = 4,
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};
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ESP_ERROR_CHECK(esp_lcd_new_i80_hub75_bus(&bus_config, &i80_bus));
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/* 8080IO设备申请 */
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esp_lcd_panel_io_i80_hub75_config_t io_config = {
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.cs_gpio_num = -1,
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.pclk_hz = HUB75_CLOCK_HZ,
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.trans_queue_depth = 10,
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.flags = {
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.pclk_idle_low = 1,
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},
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.on_color_trans_done = NULL,
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.user_ctx = NULL,
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.lcd_cmd_bits = 0,
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.lcd_param_bits = 0,
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};
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ESP_ERROR_CHECK(esp_lcd_new_panel_io_i80_hub75(i80_bus, &io_config, &io_handle));
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}
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void led_matrix_addr_gpio_init(void)
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{
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gpio_config_t io_conf = {
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.mode = GPIO_MODE_OUTPUT,
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.pin_bit_mask = (1ULL << HUB75_LAT_PIN_NUM) |
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(1ULL << HUB75_OE_PIN_NUM) |
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(1ULL << HUB75_LINE_ADDR_A_PIN_NUM) |
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(1ULL << HUB75_LINE_ADDR_B_PIN_NUM) |
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(1ULL << HUB75_LINE_ADDR_C_PIN_NUM) |
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(1ULL << HUB75_LINE_ADDR_D_PIN_NUM),
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};
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ESP_ERROR_CHECK(gpio_config(&io_conf));
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}
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void app_main(void)
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{
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led_matrix_i80_hub75_bus_init();
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led_matrix_addr_gpio_init();
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test_init_buf(i80_bus);
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while (1) {
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/* 测试，发送一次数据 */
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ESP_LOGI(TAG, "Test send data to LCD");
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/* HUB75_COL_COUNT */
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int i = 0;
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hub75_send_line(io_handle, 0, 0);
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vTaskDelay(pdMS_TO_TICKS(1000));
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ESP_LOGI(TAG, "line trans done");
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gpio_set_level(HUB75_OE_PIN_NUM, 1); /* 失能显示 */
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gpio_set_level(HUB75_LAT_PIN_NUM, 1); /* 锁存拉高 */
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vTaskDelay(pdMS_TO_TICKS(1));
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gpio_set_level(HUB75_LAT_PIN_NUM, 0); /* 拉低锁存，下降沿锁存 */
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gpio_set_level(HUB75_LINE_ADDR_A_PIN_NUM, line & 1); /* 行地址，A是低位（待求证） */
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gpio_set_level(HUB75_LINE_ADDR_B_PIN_NUM, (line >> 1) & 1);
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gpio_set_level(HUB75_LINE_ADDR_C_PIN_NUM, (line >> 2) & 1);
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gpio_set_level(HUB75_LINE_ADDR_D_PIN_NUM, (line >> 3) & 1);
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line ++;
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gpio_set_level(HUB75_OE_PIN_NUM, 0); /* 使能显示 */
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vTaskDelay(pdMS_TO_TICKS(1000));
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}
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}
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