162 lines
4.1 KiB
C
162 lines
4.1 KiB
C
/***************************************************************************
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* Copyright (C) 2020 by Federico Amedeo Izzo IU2NUO, *
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* Niccolò Izzo IU2KIN *
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* Frederik Saraci IU2NRO *
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* Silvano Seva IU2KWO *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, see <http://www.gnu.org/licenses/> *
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***************************************************************************/
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#include <platform.h>
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#include <ADC0_GDx.h>
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#include <gpio.h>
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#include <os.h>
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#include "hwconfig.h"
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/* Mutex for concurrent access to ADC0 */
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OS_MUTEX adc_mutex;
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OS_ERR e;
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void platform_init()
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{
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/* Configure GPIOs */
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gpio_setMode(GREEN_LED, OUTPUT);
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gpio_setMode(RED_LED, OUTPUT);
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gpio_setMode(LCD_BKLIGHT, OUTPUT);
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gpio_clearPin(LCD_BKLIGHT);
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gpio_setMode(PTT_SW, INPUT);
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/*
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* Configure backlight PWM: 58.5kHz, 8 bit resolution
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*/
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SIM->SCGC6 |= SIM_SCGC6_FTM0(1); /* Enable clock */
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FTM0->CONTROLS[3].CnSC = FTM_CnSC_MSB(1)
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| FTM_CnSC_ELSB(1); /* Edge-aligned PWM, clear on match */
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FTM0->CONTROLS[3].CnV = 0;
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FTM0->MOD = 0xFF; /* Reload value */
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FTM0->SC = FTM_SC_PS(3) /* Prescaler divide by 8 */
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| FTM_SC_CLKS(1); /* Enable timer */
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gpio_setMode(LCD_BKLIGHT, OUTPUT);
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gpio_setAlternateFunction(LCD_BKLIGHT, 2);
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/*
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* Initialise ADC
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*/
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adc0_init();
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OSMutexCreate(&adc_mutex, "", &e);
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}
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void platform_terminate()
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{
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gpio_clearPin(LCD_BKLIGHT);
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gpio_clearPin(RED_LED);
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gpio_clearPin(GREEN_LED);
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adc0_terminate();
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}
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float platform_getVbat()
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{
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float value = 0.0f;
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OSMutexPend(&adc_mutex, 0u, OS_OPT_PEND_BLOCKING, 0u, &e);
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value = adc0_getMeasurement(1);
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OSMutexPost(&adc_mutex, OS_OPT_POST_NONE, &e);
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return (value * 3.0f)/1000.0f;
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}
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float platform_getMicLevel()
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{
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float value = 0.0f;
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OSMutexPend(&adc_mutex, 0u, OS_OPT_PEND_BLOCKING, 0u, &e);
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value = adc0_getMeasurement(3);
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OSMutexPost(&adc_mutex, OS_OPT_POST_NONE, &e);
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return value;
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}
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float platform_getVolumeLevel()
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{
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/* TODO */
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return 0.0f;
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}
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uint8_t platform_getChSelector()
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{
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/* GD77 does not have a channel selector */
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return 0;
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}
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bool platform_getPttStatus()
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{
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/* PTT line has a pullup resistor with PTT switch closing to ground */
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return (gpio_readPin(PTT_SW) == 0) ? true : false;
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}
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void platform_ledOn(led_t led)
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{
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switch(led)
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{
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case GREEN:
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gpio_setPin(GREEN_LED);
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break;
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case RED:
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gpio_setPin(RED_LED);
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break;
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default:
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break;
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}
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}
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void platform_ledOff(led_t led)
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{
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switch(led)
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{
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case GREEN:
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gpio_clearPin(GREEN_LED);
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break;
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case RED:
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gpio_clearPin(RED_LED);
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break;
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default:
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break;
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}
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}
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void platform_beepStart(uint16_t freq)
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{
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/* TODO */
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(void) freq;
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}
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void platform_beepStop()
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{
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/* TODO */
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}
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void platform_setBacklightLevel(uint8_t level)
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{
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FTM0->CONTROLS[3].CnV = level;
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}
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