From 5146b6a75213b3bb00691712d84005703b60ce7d Mon Sep 17 00:00:00 2001
From: Alex Bashara <alexbashara2002@gmail.com>
Date: Mon, 19 May 2025 22:40:41 -0700
Subject: [PATCH 1/2] WIP GPS Reset Pin

---
 Core/Inc/main.h | 1 +
 Core/Src/gpio.c | 3 +++
 Core/Src/main.c | 3 +++
 3 files changed, 7 insertions(+)

diff --git a/Core/Inc/main.h b/Core/Inc/main.h
index a27ff3d..ee06fc4 100644
--- a/Core/Inc/main.h
+++ b/Core/Inc/main.h
@@ -52,6 +52,7 @@ extern "C" {
 // Constant Definitions
 #define STATUS_LED_PIN              (13)
 #define GPS_ADDR                    (0x42)
+#define GPS_RST_PIN                 (8)
 #define SUS_POT_TRAVEL              (50)
 #define THERMOCOUPLE_CONVERSION     (100)
 
diff --git a/Core/Src/gpio.c b/Core/Src/gpio.c
index 21a1997..fd9abba 100644
--- a/Core/Src/gpio.c
+++ b/Core/Src/gpio.c
@@ -26,6 +26,7 @@ void LED_Init() {
 void GPIO_Init() {
   // Enable GPIO A Clock
   RCC->AHB1ENR |= RCC_AHB1ENR_GPIOAEN;
+  RCC->AHB1ENR |= RCC_AHB1ENR_GPIOBEN;
 
   // Set GPIO Pins to Output mode
   // Pins reset to push pull mode
@@ -34,6 +35,8 @@ void GPIO_Init() {
   GPIOA->OSPEEDR &= ~GPIO_OSPEEDR_OSPEED8 & ~GPIO_OSPEEDR_OSPEED9;
   GPIOA->OSPEEDR |= (0x1 << GPIO_OSPEEDR_OSPEED8_Pos) | (0x1 << GPIO_OSPEEDR_OSPEED9_Pos);
   GPIOA->PUPDR &= ~GPIO_PUPDR_PUPD8 & ~GPIO_PUPDR_PUPD9;
+
+  // TODO: GPIOB Config for GPS reset pin
 }
 
 GPIO_Status GPIO_EXTI_Init(GPIO_TypeDef* GPIO, uint8_t pin) {
diff --git a/Core/Src/main.c b/Core/Src/main.c
index 3830382..85cba45 100644
--- a/Core/Src/main.c
+++ b/Core/Src/main.c
@@ -127,6 +127,9 @@ void GPS_Task() {
   GPS_Status status;
   volatile GPS_Data data;
   const TickType_t GPSFrequency = 40; // 25 Hz
+  Clear_Pin(GPIOB, GPS_RST_PIN); // Turn off GPS Power
+  vTaskDelay(100);
+  Set_Pin(GPIOB, GPS_RST_PIN); // Turn on GPS Power
   vTaskDelay(1000); // Delay for GPS Module to Boot
   status = GPS_Init();
 

From 5974691717cf34569178aa7cfdb65e6f65753c84 Mon Sep 17 00:00:00 2001
From: Alex Bashara <alexbashara2002@gmail.com>
Date: Tue, 20 May 2025 19:26:54 -0700
Subject: [PATCH 2/2] Added GPS reset logic

---
 Core/Inc/main.h |  1 +
 Core/Src/gpio.c | 17 +++++++++++------
 Core/Src/main.c |  6 +++++-
 3 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/Core/Inc/main.h b/Core/Inc/main.h
index ee06fc4..f08d411 100644
--- a/Core/Inc/main.h
+++ b/Core/Inc/main.h
@@ -53,6 +53,7 @@ extern "C" {
 #define STATUS_LED_PIN              (13)
 #define GPS_ADDR                    (0x42)
 #define GPS_RST_PIN                 (8)
+#define LORA_RST_PIN                (8)
 #define SUS_POT_TRAVEL              (50)
 #define THERMOCOUPLE_CONVERSION     (100)
 
diff --git a/Core/Src/gpio.c b/Core/Src/gpio.c
index fd9abba..91f6545 100644
--- a/Core/Src/gpio.c
+++ b/Core/Src/gpio.c
@@ -24,19 +24,24 @@ void LED_Init() {
 }
 
 void GPIO_Init() {
-  // Enable GPIO A Clock
+  // Enable GPIO Clocks
   RCC->AHB1ENR |= RCC_AHB1ENR_GPIOAEN;
   RCC->AHB1ENR |= RCC_AHB1ENR_GPIOBEN;
 
-  // Set GPIO Pins to Output mode
-  // Pins reset to push pull mode
-  GPIOA->MODER &= ~GPIO_MODER_MODE8 & ~GPIO_MODER_MODE9; // Clear RST Pin
+  // Configure LoRa Reset and Interrupt Pins
+  GPIOA->MODER &= ~GPIO_MODER_MODE8 & ~GPIO_MODER_MODE9;
   GPIOA->MODER |= (0x1 << GPIO_MODER_MODE8_Pos) | (0x0 << GPIO_MODER_MODE9_Pos);
   GPIOA->OSPEEDR &= ~GPIO_OSPEEDR_OSPEED8 & ~GPIO_OSPEEDR_OSPEED9;
-  GPIOA->OSPEEDR |= (0x1 << GPIO_OSPEEDR_OSPEED8_Pos) | (0x1 << GPIO_OSPEEDR_OSPEED9_Pos);
+  GPIOA->OSPEEDR |= (0x1 << GPIO_OSPEEDR_OSPEED9_Pos);
   GPIOA->PUPDR &= ~GPIO_PUPDR_PUPD8 & ~GPIO_PUPDR_PUPD9;
+  GPIOA->PUPDR |= (0x2 << GPIO_PUPDR_PUPD8_Pos);
 
-  // TODO: GPIOB Config for GPS reset pin
+  // GPS Reset Pin
+  GPIOB->MODER &= ~GPIO_MODER_MODE8;
+  GPIOB->MODER |= (0x1 << GPIO_MODER_MODE8_Pos);
+  GPIOB->OTYPER &= ~GPIO_OTYPER_OT8; // Push Pull
+  GPIOB->OSPEEDR &= ~GPIO_OSPEEDR_OSPEED8;
+  GPIOB->PUPDR &= ~GPIO_PUPDR_PUPD8; // No Pull up/down
 }
 
 GPIO_Status GPIO_EXTI_Init(GPIO_TypeDef* GPIO, uint8_t pin) {
diff --git a/Core/Src/main.c b/Core/Src/main.c
index 85cba45..4ae717b 100644
--- a/Core/Src/main.c
+++ b/Core/Src/main.c
@@ -42,7 +42,8 @@ void main() {
   GPIO_Init();
   DMA_ADC1_Init(&ADC_Buffer);
   USART3_Init();
-  Lora_Init();  
+  Lora_Init();
+  Clear_Pin(GPIOA, LORA_RST_PIN); // Turn On LoRa Module
 
   // Create Tasks to collect Data
   Task_Status &= xTaskCreate(ADC_Task, "ADC_Task", 128, NULL, ADC_PRIORITY, NULL);
@@ -127,9 +128,12 @@ void GPS_Task() {
   GPS_Status status;
   volatile GPS_Data data;
   const TickType_t GPSFrequency = 40; // 25 Hz
+
+  // Reset GPS Module
   Clear_Pin(GPIOB, GPS_RST_PIN); // Turn off GPS Power
   vTaskDelay(100);
   Set_Pin(GPIOB, GPS_RST_PIN); // Turn on GPS Power
+
   vTaskDelay(1000); // Delay for GPS Module to Boot
   status = GPS_Init();