From 2f49157401e34889b950084521fb5f0efd136bb1 Mon Sep 17 00:00:00 2001
From: Richard Li <richard.li@ces.hk>
Date: Wed, 17 Apr 2024 14:09:26 +0800
Subject: [PATCH] fix(pl18): USB detect pin can be uninitialized in bootloader

---
 radio/src/targets/pl18/board.cpp | 14 ++++++++++++++
 radio/src/targets/pl18/board.h   |  4 ++++
 2 files changed, 18 insertions(+)

diff --git a/radio/src/targets/pl18/board.cpp b/radio/src/targets/pl18/board.cpp
index 227a9796d9c..0022c810463 100644
--- a/radio/src/targets/pl18/board.cpp
+++ b/radio/src/targets/pl18/board.cpp
@@ -21,6 +21,7 @@
  
 #include "stm32_adc.h"
 
+#include "stm32_gpio_driver.h"
 #include "stm32_ws2812.h"
 #include "boards/generic_stm32/rgb_leds.h"
 
@@ -98,6 +99,19 @@ void ledStripOff()
   ws2812_update(&_led_timer);
 }
 
+void boardBootloaderInit()
+{
+  // USB charger status pins
+  stm32_gpio_enable_clock(UCHARGER_GPIO);
+  GPIO_InitTypeDef GPIO_InitStructure;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
+  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
+  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
+  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
+  GPIO_InitStructure.GPIO_Pin = UCHARGER_GPIO_PIN;
+  GPIO_Init(UCHARGER_GPIO, &GPIO_InitStructure);
+}
+
 void boardInit()
 {
 #if defined(SEMIHOSTING)
diff --git a/radio/src/targets/pl18/board.h b/radio/src/targets/pl18/board.h
index a64903091d9..7809a5225a6 100644
--- a/radio/src/targets/pl18/board.h
+++ b/radio/src/targets/pl18/board.h
@@ -42,6 +42,10 @@ extern uint16_t sessionTimer;
 
 #define SLAVE_MODE()                    (g_model.trainerData.mode == TRAINER_MODE_SLAVE)
 
+// Initilizes the board for the bootloader
+#define HAVE_BOARD_BOOTLOADER_INIT 1
+void boardBootloaderInit();
+
 // Board driver
 void boardInit();
 void boardOff();