22f84a15c3
The MAX7219 driver has been extended to add support for bitmap drawing on an 8-by-8 LED matrix panel. Consumers can specify the targeted chip, which corresponds to a LED matrix panel, and provide a 64-bit image buffer specifying the pixels which should illuminate.
48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
/*
|
|
* Example of using MAX7219 driver with 8x8 LED Matrix displays
|
|
*
|
|
* MAX7219 driver uses the hardware SPI bus, so connect with pinout:
|
|
* DIN -> HSPID/HMOSI
|
|
* CS -> HSPICS/HCS
|
|
* CLK -> HSPICLK/HSCLK
|
|
*/
|
|
#include <esp/uart.h>
|
|
#include <espressif/esp_common.h>
|
|
#include <stdio.h>
|
|
#include <max7219/max7219.h>
|
|
#include <FreeRTOS.h>
|
|
#include <task.h>
|
|
|
|
#include "./digit_font.h"
|
|
|
|
#define CS_PIN 15
|
|
#define DELAY 1000
|
|
|
|
static max7219_display_t disp = {
|
|
.cs_pin = CS_PIN,
|
|
.digits = 8,
|
|
.cascade_size = 4,
|
|
.mirrored = false
|
|
};
|
|
|
|
void user_init(void) {
|
|
uart_set_baud(0, 115200);
|
|
printf("SDK version:%s\n", sdk_system_get_sdk_version());
|
|
|
|
max7219_init(&disp);
|
|
//max7219_set_decode_mode(&disp, true);
|
|
|
|
uint8_t counter = 0;
|
|
while (true) {
|
|
max7219_clear(&disp);
|
|
|
|
max7219_draw_image_8x8(&disp, 0, DIGITS[counter % 10]);
|
|
max7219_draw_image_8x8(&disp, 1, DIGITS[(counter+1) % 10]);
|
|
max7219_draw_image_8x8(&disp, 2, DIGITS[(counter+2) % 10]);
|
|
max7219_draw_image_8x8(&disp, 3, DIGITS[(counter+3) % 10]);
|
|
|
|
vTaskDelay(DELAY / portTICK_PERIOD_MS);
|
|
|
|
counter++;
|
|
}
|
|
}
|