#!/bin/bash
# How to run this script
# sudo curl https://www.bi7jta.org/files/MMDVM_Firmware/repeater_HAT/set_GPIO_standalone_upgrade_repeater_FW_M17_12MHz.sh.txt | sudo sh
# Change firmware to your own build file if necessary mmdvm_f4_iz8gur_m17.hex

sudo mount -o remount,rw / ; 
cd /home/pi-star
hex_file="mmdvm_f4_m17_build20230606.hex" #必须加上，否则无法写入估计，只写入0%
echo "hex_file:${hex_file}"
rm -f ./${hex_file}
curl -OL https://www.bi7jta.org/files/MMDVM_Firmware/repeater_HAT/${hex_file};
curl -OL https://www.bi7jta.org/files/MMDVM_Firmware/repeater_HAT/stm32flashV5; 

sudo chmod +x stm32flashV5;

echo "Stopping Pi-Star Services..." 

sudo systemctl stop pistar-watchdog.timer
sudo systemctl stop pistar-watchdog.service
sudo systemctl stop mmdvmhost.timer
sudo systemctl stop nextiondriver.service #Must stop NextionDriver
sudo systemctl stop mmdvmhost.service
sleep 1

echo "Killing any remaining MMDVMHost processes..."
sudo killall MMDVMHost
sudo killall MMDVMHost_NoOLED
sudo killall MMDVMHost_Adafruit

echo "Starting Flashing..."

echo "20" > /sys/class/gpio/export  
echo "21" > /sys/class/gpio/export  

echo "out" > /sys/class/gpio/gpio20/direction   
echo "out" > /sys/class/gpio/gpio21/direction  
#####执行到这一步，进入reset状态，PWR/COS灯亮

echo "0" > /sys/class/gpio/gpio21/value #（21写入低电平）  
echo "1" > /sys/class/gpio/gpio20/value #（20写入高电平）

#等待1s 中继板电容充分放电
#whait enough to discharge C8
sleep 1
echo "1" > /sys/class/gpio/gpio21/value #再将21写入高电平,进入刷机状态，标志“ACT红灯亮” #230对应树莓派20
#whait enough to charge C8
sleep 1
#####注意：b5有些板子，无法进入刷机状态，如果  -R  -i 20,-21,21:-20,-21,21 /dev/ttyAMA0; 无法刷，这种方法也不行

echo “现在：GPIO20，G PIO21所有脚处于高电平，开始写固件...”

echo "Flashing RPi3B 4B ..."
sudo /home/pi-star/stm32flashV5 -v -w /home/pi-star/${hex_file}  -R /dev/ttyAMA0;
sleep 1

########以下是GPIO复位，避免重启才生效##########
echo "0" > /sys/class/gpio/gpio21/value  #229对应树莓派21

echo "0" > /sys/class/gpio/gpio20/value #230对应树莓派20
#whait enough to discharge C8
sleep 1
##这里gpio21高电平就重置，所有灯全部亮了 ，要复位，需要将GPIO21 20都设置为0，再将GPIO21置为1
echo "1" > /sys/class/gpio/gpio21/value #230对应树莓派20
#whait enough to charge C8
sleep 1

echo "in" > /sys/class/gpio/gpio20/direction  #230对应树莓派20
echo "in" > /sys/class/gpio/gpio21/direction  #229对应树莓派21
echo "20" > /sys/class/gpio/unexport #230对应树莓派20
echo "21" > /sys/class/gpio/unexport #229对应树莓派21

echo "Starting Pi-Star Services..."
sudo mount -o remount,ro /

sudo systemctl start pistar-watchdog.timer
sudo systemctl start pistar-watchdog
sudo systemctl start mmdvmhost.timer
sudo systemctl start mmdvmhost


echo "Finnished..."