ua1zbe
a1206d6fd4
Features: - VFO mode with direct frequency input - POCSAG decoder (512/1200 baud) with BCH(31,21) correction - Full-screen Spectrum analyzer - FM Radio receiver - RSSI signal indicator overlay - Custom boot splash (UA1ZBE / POCSAG pager / build date) Architecture: - app/mode.c — mode dispatcher (VFO/POCSAG/Spectrum/FM) - app/boot_splash.c — 2-second boot splash - app/pocsag/ — POCSAG decoder + BCH correction - app/display_rssi.c — RSSI indicator - main.c — entry point with custom init - syscalls.c — bare-metal _sbrk stub Build: arm-none-eabi-gcc -Os -flto -Wall -Werror -Wextra Size: 57.9KB Flash / 3.6KB RAM Controls: - 0-9: Direct frequency input (VFO) - SK2: POCSAG mode - SK1: Spectrum analyzer - 0: FM Radio - EXIT: Return to VFO - F/*: Toggle 512/1200 baud (in POCSAG)
118 lines
2.6 KiB
C
118 lines
2.6 KiB
C
/* Copyright 2023 Dual Tachyon
|
|
* https://github.com/DualTachyon
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "backlight.h"
|
|
#include "bsp/dp32g030/gpio.h"
|
|
#include "bsp/dp32g030/pwmplus.h"
|
|
#include "bsp/dp32g030/portcon.h"
|
|
#include "driver/gpio.h"
|
|
#include "settings.h"
|
|
|
|
// this is decremented once every 500ms
|
|
uint16_t gBacklightCountdown_500ms = 0;
|
|
bool backlightOn;
|
|
|
|
void BACKLIGHT_InitHardware()
|
|
{
|
|
// 48MHz / 94 / 1024 ~ 500Hz
|
|
const uint32_t PWM_FREQUENCY_HZ = 1000;
|
|
PWM_PLUS0_CLKSRC |= ((48000000 / 1024 / PWM_FREQUENCY_HZ) << 16);
|
|
PWM_PLUS0_PERIOD = 1023;
|
|
|
|
PORTCON_PORTB_SEL0 &= ~(0
|
|
// Back light
|
|
| PORTCON_PORTB_SEL0_B6_MASK
|
|
);
|
|
PORTCON_PORTB_SEL0 |= 0
|
|
// Back light PWM
|
|
| PORTCON_PORTB_SEL0_B6_BITS_PWMP0_CH0
|
|
;
|
|
|
|
PWM_PLUS0_GEN =
|
|
PWMPLUS_GEN_CH0_OE_BITS_ENABLE |
|
|
PWMPLUS_GEN_CH0_OUTINV_BITS_ENABLE |
|
|
0;
|
|
|
|
PWM_PLUS0_CFG =
|
|
PWMPLUS_CFG_CNT_REP_BITS_ENABLE |
|
|
PWMPLUS_CFG_COUNTER_EN_BITS_ENABLE |
|
|
0;
|
|
}
|
|
|
|
void BACKLIGHT_TurnOn(void)
|
|
{
|
|
if (gEeprom.BACKLIGHT_TIME == 0) {
|
|
BACKLIGHT_TurnOff();
|
|
return;
|
|
}
|
|
|
|
backlightOn = true;
|
|
BACKLIGHT_SetBrightness(gEeprom.BACKLIGHT_MAX);
|
|
|
|
switch (gEeprom.BACKLIGHT_TIME) {
|
|
default:
|
|
case 1: // 5 sec
|
|
case 2: // 10 sec
|
|
case 3: // 20 sec
|
|
gBacklightCountdown_500ms = 1 + (2 << (gEeprom.BACKLIGHT_TIME - 1)) * 5;
|
|
break;
|
|
case 4: // 1 min
|
|
case 5: // 2 min
|
|
case 6: // 4 min
|
|
gBacklightCountdown_500ms = 1 + (2 << (gEeprom.BACKLIGHT_TIME - 4)) * 60;
|
|
break;
|
|
case 7: // always on
|
|
gBacklightCountdown_500ms = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
void BACKLIGHT_TurnOff()
|
|
{
|
|
#ifdef ENABLE_BLMIN_TMP_OFF
|
|
register uint8_t tmp;
|
|
|
|
if (gEeprom.BACKLIGHT_MIN_STAT == BLMIN_STAT_ON)
|
|
tmp = gEeprom.BACKLIGHT_MIN;
|
|
else
|
|
tmp = 0;
|
|
|
|
BACKLIGHT_SetBrightness(tmp);
|
|
#else
|
|
BACKLIGHT_SetBrightness(gEeprom.BACKLIGHT_MIN);
|
|
#endif
|
|
gBacklightCountdown_500ms = 0;
|
|
backlightOn = false;
|
|
}
|
|
|
|
bool BACKLIGHT_IsOn()
|
|
{
|
|
return backlightOn;
|
|
}
|
|
|
|
static uint8_t currentBrightness;
|
|
|
|
void BACKLIGHT_SetBrightness(uint8_t brigtness)
|
|
{
|
|
currentBrightness = brigtness;
|
|
PWM_PLUS0_CH0_COMP = (1 << brigtness) - 1;
|
|
//PWM_PLUS0_SWLOAD = 1;
|
|
}
|
|
|
|
uint8_t BACKLIGHT_GetBrightness(void)
|
|
{
|
|
return currentBrightness;
|
|
} |