147 lines
3.7 KiB
C
147 lines
3.7 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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* 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 <gpio.h>
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#include "hwconfig.h"
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#include "adc1.h"
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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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/* Backlight pin connected to TIM8 CR1 */
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gpio_setMode(LCD_BKLIGHT, ALTERNATE);
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gpio_setAlternateFunction(LCD_BKLIGHT, 3);
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/* Initialise ADC1, for vbat, RSSI, ... */
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adc1_init();
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/*
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* Configure TIM8 for backlight PWM: Fpwm = 100kHz, 8 bit of resolution
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* APB2 freq. is 84MHz, then: PSC = 327 to have Ftick = 256.097kHz
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* With ARR = 256, Fpwm is 100kHz;
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*/
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RCC->APB2ENR |= RCC_APB2ENR_TIM8EN;
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TIM8->ARR = 255;
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TIM8->PSC = 327;
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TIM8->CNT = 0;
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TIM8->CR1 |= TIM_CR1_ARPE; /* LCD backlight is on PC6, TIM8-CH1 */
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TIM8->CCMR1 |= TIM_CCMR1_OC1M_2
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| TIM_CCMR1_OC1M_1
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| TIM_CCMR1_OC1PE;
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TIM8->CCER |= TIM_CCER_CC1E;
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TIM8->BDTR |= TIM_BDTR_MOE;
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TIM8->CCR1 = 0;
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TIM8->EGR = TIM_EGR_UG; /* Update registers */
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TIM8->CR1 |= TIM_CR1_CEN; /* Start timer */
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}
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void platform_terminate()
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{
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/* Shut down backlight */
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gpio_setMode(LCD_BKLIGHT, OUTPUT);
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gpio_clearPin(LCD_BKLIGHT);
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gpio_clearPin(GREEN_LED);
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gpio_clearPin(RED_LED);
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/* Shut down timer */
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RCC->APB2ENR &= ~RCC_APB2ENR_TIM8EN;
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/* Shut down ADC */
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adc1_terminate();
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}
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float platform_getVbat()
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{
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return adc1_getMeasurement(0);
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}
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float platform_getMicLevel()
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{
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return adc1_getMeasurement(2);
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}
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float platform_getVolumeLevel()
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{
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return adc1_getMeasurement(3);
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}
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uint8_t platform_getChSelector()
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{
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return 0.0f;
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}
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bool platform_getPttStatus()
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{
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return 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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(void) freq;
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}
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void platform_beepStop()
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{
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}
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void platform_setBacklightLevel(uint8_t level)
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{
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TIM8->CCR1 = level;
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}
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