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add example and fix makefile

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This commit is contained in:
Zaltora 2018-05-01 10:15:42 +02:00
parent a0a0cbf2da
commit a02af3f279
5 changed files with 87 additions and 14 deletions
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4
examples/dsm_test/Makefile Normal file
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@ -0,0 +1,4 @@
# Simple makefile for simple example
PROGRAM=dsm_test
EXTRA_COMPONENTS = extras/dsm
include ../../common.mk

67
examples/dsm_test/dsm_test.c Normal file
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@ -0,0 +1,67 @@
/* Very basic example to test the dsm library
* Led intensity from module will change over time.
*
* Part of esp-open-rtos
* Copyright (C) 2018 zaltora (https://github.com/Zaltora)
* BSD Licensed as described in the file LICENSE
*/
#include "espressif/esp_common.h"
#include "esp/uart.h"
#include "FreeRTOS.h"
#include "task.h"
#include "dsm.h"
#define TEST_WITH_160MHZ (0)
#define DSM_PIN (2)
void task1(void *pvParameters)
{
uint32_t const init_count = 0;
uint32_t count = init_count;
while(1)
{
vTaskDelay(100/portTICK_PERIOD_MS);
printf("Target set to %3u, ", count);
//Freq = (80,000,000/prescale) * (target / 256) HZ (0 < target < 128)
//Freq = (80,000,000/prescale) * ((256 - target) / 256) HZ (128 < target < 256)
if (count < 128)
{
printf("Freqency: %.1f Hz\r\n", (80000000.0/255.0 * (count/ 256.0)));
}
else
{
printf("Freqency: %.1f Hz\r\n", 80000000.0/255.0 * ((256.0-count)/ 256.0));
}
dsm_set_target(count);
count++;
if (count > UINT8_MAX)
count = init_count;
}
}
void user_init(void)
{
uint8_t pins[1];
uart_set_baud(0, 115200);
#if (TEST_WITH_160MHZ)
sdk_system_update_cpu_freq(160);
#endif
printf("SDK version:%s\r\n", sdk_system_get_sdk_version());
pins[0] = DSM_PIN;
/* register pin to use with DSM */
dsm_init(1, pins);
/* Set prescale to FF to get a proper signal */
dsm_set_prescale(0xFF);
/* Target initial */
dsm_set_target(0);
/* start dsm to pin */
dsm_start();
printf("dsm start\r\n");
xTaskCreate(task1, "tsk1", 256, NULL, 2, NULL);
}

10
extras/dsm/component.mk
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@ -1,9 +1,9 @@
# Component makefile for private/dsm
# Component makefile for extras/dsm
INC_DIRS += $(ROOT)private/dsm
INC_DIRS += $(ROOT)extras/dsm
# args for passing into compile rule generation
private/dsm_INC_DIR = $(ROOT)private/dsm
private/dsm_SRC_DIR = $(ROOT)private/dsm
extras/dsm_INC_DIR = $(ROOT)extras/dsm
extras/dsm_SRC_DIR = $(ROOT)extras/dsm
$(eval $(call component_compile_rules,private/dsm))
$(eval $(call component_compile_rules,extras/dsm))

6
extras/dsm/dsm.c
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@ -11,7 +11,7 @@
#include <esp8266.h>
#ifdef DSM_DEBUG
#if (DSM_DEBUG)
#define debug(fmt, ...) printf("%s: " fmt "\n", "DSM", ## __VA_ARGS__)
#else
#define debug(fmt, ...)
@ -57,8 +57,6 @@ void dsm_init(uint8_t npins, const uint8_t* pins)
dsmInfo.running = 0;
}
// Freq = (80,000,000/prescale) * (target / 256) HZ (0 < target < 128)
// Freq = (80,000,000/prescale) * ((256 - target) / 256) HZ (128 < target < 256)
void dsm_set_prescale(uint8_t prescale)
{
//TODO: Add a freq/prescale converter
@ -66,8 +64,6 @@ void dsm_set_prescale(uint8_t prescale)
debug("Set Prescale: %u",dsmInfo.preScale);
}
// Freq = (80,000,000/prescale) * (target / 256) HZ (0 < target < 128)
// Freq = (80,000,000/prescale) * ((256 - target) / 256) HZ (128 < target < 256)
void dsm_set_target(uint8_t target)
{
dsmInfo.target = target;

14
extras/dsm/dsm.h
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@ -8,14 +8,20 @@
#ifndef EXTRAS_DSM_H_
#define EXTRAS_DSM_H_
#include <stdint.h>
#define MAX_DSM_PINS 8
#ifdef __cplusplus
extern "C" {
#endif
#include <stdint.h>
#define MAX_DSM_PINS (8)
#define DSM_DEBUG (0)
/*
* Freq = (80,000,000/prescale) * (target / 256) HZ (0 < target < 128)
* Freq = (80,000,000/prescale) * ((256 - target) / 256) HZ (128 < target < 256)
*/
void dsm_init(uint8_t npins, const uint8_t* pins);
void dsm_set_prescale(uint8_t prescale);
void dsm_set_target(uint8_t target);