68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
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/* Very basic example to test the dsm library
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* Led intensity from module will change over time.
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*
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* Part of esp-open-rtos
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* Copyright (C) 2018 zaltora (https://github.com/Zaltora)
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* BSD Licensed as described in the file LICENSE
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*/
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#include "espressif/esp_common.h"
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#include "esp/uart.h"
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#include "FreeRTOS.h"
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#include "task.h"
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#include "dsm.h"
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#define TEST_WITH_160MHZ (0)
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#define DSM_PIN (2)
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void task1(void *pvParameters)
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{
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uint32_t const init_count = 0;
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uint32_t count = init_count;
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while(1)
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{
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vTaskDelay(100/portTICK_PERIOD_MS);
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printf("Target set to %3u, ", count);
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//Freq = (80,000,000/prescale) * (target / 256) HZ (0 < target < 128)
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//Freq = (80,000,000/prescale) * ((256 - target) / 256) HZ (128 < target < 256)
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if (count < 128)
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{
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printf("Freqency: %.1f Hz\r\n", (80000000.0/255.0 * (count/ 256.0)));
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}
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else
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{
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printf("Freqency: %.1f Hz\r\n", 80000000.0/255.0 * ((256.0-count)/ 256.0));
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}
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dsm_set_target(count);
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count++;
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if (count > UINT8_MAX)
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count = init_count;
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}
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}
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void user_init(void)
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{
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uint8_t pins[1];
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uart_set_baud(0, 115200);
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#if (TEST_WITH_160MHZ)
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sdk_system_update_cpu_freq(160);
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#endif
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printf("SDK version:%s\r\n", sdk_system_get_sdk_version());
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pins[0] = DSM_PIN;
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/* register pin to use with DSM */
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dsm_init(1, pins);
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/* Set prescale to FF to get a proper signal */
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dsm_set_prescale(0xFF);
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/* Target initial */
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dsm_set_target(0);
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/* start dsm to pin */
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dsm_start();
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printf("dsm start\r\n");
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xTaskCreate(task1, "tsk1", 256, NULL, 2, NULL);
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}
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