53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
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/*
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* Example of using MAX7219 driver with 7 segment displays
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*
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* Part of esp-open-rtos
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* Copyright (C) 2017 Ruslan V. Uss <unclerus@gmail.com>
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* BSD Licensed as described in the file LICENSE
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*/
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#include <esp/uart.h>
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#include <espressif/esp_common.h>
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#include <stdio.h>
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#include <max7219/max7219.h>
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#include <FreeRTOS.h>
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#include <task.h>
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#include <stdio.h>
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#include <esp/hwrand.h>
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#define CS_PIN 5
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#define DELAY 2000
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static max7219_display_t disp = {
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.cs_pin = CS_PIN,
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.digits = 8,
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.cascade_size = 1,
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.mirrored = true
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};
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void user_init(void)
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{
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uart_set_baud(0, 115200);
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printf("SDK version:%s\n", sdk_system_get_sdk_version());
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max7219_init(&disp);
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//max7219_set_decode_mode(&disp, true);
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char buf[9];
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while (true)
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{
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max7219_clear(&disp);
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max7219_draw_text(&disp, 0, "7219LEDS");
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vTaskDelay(DELAY / portTICK_PERIOD_MS);
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max7219_clear(&disp);
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sprintf(buf, "%2.4f A", 34.6782);
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max7219_draw_text(&disp, 0, buf);
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vTaskDelay(DELAY / portTICK_PERIOD_MS);
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max7219_clear(&disp);
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sprintf(buf, "%08x", hwrand());
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max7219_draw_text(&disp, 0, buf);
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vTaskDelay(DELAY / portTICK_PERIOD_MS);
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}
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}
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