243 lines
7.3 KiB
C
243 lines
7.3 KiB
C
/***************************************************************************
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* Copyright (C) 2021 - 2023 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 <interfaces/gpio.h>
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#include <interfaces/nvmem.h>
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#include <interfaces/platform.h>
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#include <interfaces/delays.h>
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#include <hwconfig.h>
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#include <string.h>
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#include <backlight.h>
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#include <ADC1_MDx.h>
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#include <calibInfo_MDx.h>
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#include <toneGenerator_MDx.h>
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#include <interfaces/rtc.h>
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#include <interfaces/audio.h>
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#include <SPI2.h>
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#include <chSelector.h>
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/* TODO: Hardcoded hwInfo until we implement reading from flash */
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static const hwInfo_t hwInfo
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{
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.vhf_maxFreq = 174,
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.vhf_minFreq = 136,
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.vhf_band = 1,
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.uhf_maxFreq = 480,
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.uhf_minFreq = 400,
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.uhf_band = 1,
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.hw_version = 0,
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.name = "MD-9600"
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}
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void platform_init()
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{
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/* Enable 8V power supply rail */
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gpio_setMode(PWR_SW, OUTPUT);
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gpio_setPin(PWR_SW);
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gpio_setMode(PTT_SW, INPUT);
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/*
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* Initialise ADC1, for vbat, RSSI, ...
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* Configuration of corresponding GPIOs in analog input mode is done inside
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* the driver.
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*/
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adc1_init();
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/*
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* Initialise SPI2 for external flash and LCD
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*/
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gpio_setMode(SPI2_CLK, ALTERNATE);
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gpio_setMode(SPI2_SDO, ALTERNATE);
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gpio_setMode(SPI2_SDI, ALTERNATE);
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gpio_setAlternateFunction(SPI2_CLK, 5); /* SPI2 is on AF5 */
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gpio_setAlternateFunction(SPI2_SDO, 5);
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gpio_setAlternateFunction(SPI2_SDI, 5);
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spi2_init();
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nvm_init(); /* Initialise non volatile memory manager */
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toneGen_init(); /* Initialise tone generator */
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rtc_init(); /* Initialise RTC */
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backlight_init(); /* Initialise backlight driver */
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chSelector_init(); /* Initialise channel selector handler */
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audio_init(); /* Initialise audio management module */
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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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backlight_terminate();
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/* Shut down all the modules */
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adc1_terminate();
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toneGen_terminate();
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chSelector_terminate();
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audio_terminate();
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/* Finally, remove power supply */
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gpio_clearPin(PWR_SW);
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/*
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* MD-9600 does not have a proper power on/off mechanism and the MCU is
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* always powered. Thus, for turn off, perform a system reset.
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*/
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NVIC_SystemReset();
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while(1) ;
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}
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uint16_t platform_getVbat()
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{
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/*
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* Battery voltage is measured through an 1:5.7 voltage divider and
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* adc1_getMeasurement returns a value in mV. To have effective battery
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* voltage we have to multiply by the ratio: with a simple trick we can do
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* it also without using floats and with a maximum error of -1mV.
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*/
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uint16_t vbat = adc1_getMeasurement(ADC_VBAT_CH);
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return (vbat * 6) - ((vbat * 3) / 10);
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}
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uint8_t platform_getMicLevel()
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{
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/* Value from ADC is 12 bit wide: shift right by four to get 0 - 255 */
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return (adc1_getRawSample(ADC_VOX_CH) >> 4);
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}
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uint8_t platform_getVolumeLevel()
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{
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/*
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* Knob position corresponds to an analog signal in the range 0 - 1600mV,
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* converted to a value in range 0 - 255 using fixed point math: divide by
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* 1600 and then multiply by 256.
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*/
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uint16_t value = adc1_getMeasurement(ADC_VOL_CH);
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if(value > 1599) value = 1599;
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uint32_t level = value << 16;
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level /= 1600;
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return ((uint8_t) (level >> 8));
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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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bool platform_pwrButtonStatus()
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{
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/*
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* The power on/off button, when pressed, connects keyboard coloumn 3 to
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* row 3. Here we set coloumn to input with pull up mode and row to output
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* mode, consistently with keyboard driver.
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*/
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gpio_setMode(KB_COL3, INPUT_PULL_UP);
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gpio_setMode(KB_ROW3, OUTPUT);
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/*
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* Critical section to avoid stomping the keyboard driver.
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* Also, working at register level to keep it as short as possible
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*/
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__disable_irq();
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uint32_t prevRowState = GPIOD->ODR & (1 << 4); /* Row 3 is PD4 */
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GPIOD->BSRR = 1 << (4 + 16); /* PD4 low */
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delayUs(10);
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uint32_t btnStatus = GPIOE->IDR & 0x01; /* Col 3 is PE0 */
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GPIOD->ODR |= prevRowState; /* Restore PD4 */
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__enable_irq();
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/*
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* Power button API requires this function to return true if power is
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* enabled. To comply to the requirement this function behaves in this way:
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* - if button is not pressed, return current status of PWR_SW.
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* - if button is pressed and PWR_SW is low, return true as user wants to
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* turn the radio on.
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* - if button is pressed and PWR_SW is high, return false as user wants to
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* turn the radio off.
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*/
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/*
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* Power button follows an active-low logic: btnStatus is low when button
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* is pressed
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*/
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if(btnStatus == 0)
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{
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if(gpio_readPin(PWR_SW))
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{
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/* Power switch high and button pressed: request to turn off */
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return false;
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}
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else
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{
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/* Power switch low and button pressed: request to turn on */
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return true;
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}
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}
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/* We get here if power button is not pressed, just return PWR_SW status */
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return gpio_readPin(PWR_SW) ? true : false;
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}
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void platform_ledOn(led_t led)
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{
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/* No LEDs on this platform */
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(void) led;
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}
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void platform_ledOff(led_t led)
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{
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/* No LEDs on this platform */
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(void) led;
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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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datetime_t platform_getCurrentTime()
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{
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return rtc_getTime();
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}
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void platform_setTime(datetime_t t)
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{
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rtc_setTime(t);
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}
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const hwInfo_t *platform_getHwInfo()
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{
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return &hwInfo;
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}
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/*
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* NOTE: implementation of this API function is provided in
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* platform/drivers/chSelector/chSelector_MD9600.c
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*/
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// int8_t platform_getChSelector()
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