From beffb9e0be43da9561857fa7388ac6d7cf22be4f Mon Sep 17 00:00:00 2001
From: jose5556 <josefilmeneses@gmail.com>
Date: Tue, 20 Jan 2026 10:01:03 +0000
Subject: [PATCH] Add I2C3 GPIO configuration for PC1 and PA7

---
 README.md                  |  2 ++
 ThreadX_Os/Core/Src/main.c | 16 +++++++++
 ThreadX_Os/ThreadX_Os.ioc  | 66 +++++++++++++++++++++-----------------
 3 files changed, 54 insertions(+), 30 deletions(-)

diff --git a/README.md b/README.md
index a62f1a0..b027ce3 100644
--- a/README.md
+++ b/README.md
@@ -44,6 +44,8 @@ This project implements a real-time speed sensor and CAN communication system on
  - FDCAN1_RX -> PB_8 (CAN_RX)
  - FDCAN1_TX -> PB_9 (CAN_TX)
  - TIM1_CH1  -> PA_8 (Sensor speed)
+ - I2C3      -> PA_7 (SCL)
+ - I2C3      -> PC_1 (SDA)
 
 # How to Extend The Project
  - Implement a mechanism to process incoming data and perform the appropriate actions.
diff --git a/ThreadX_Os/Core/Src/main.c b/ThreadX_Os/Core/Src/main.c
index 04c553e..ffbf7ab 100644
--- a/ThreadX_Os/Core/Src/main.c
+++ b/ThreadX_Os/Core/Src/main.c
@@ -586,6 +586,22 @@ static void MX_GPIO_Init(void)
   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
   HAL_GPIO_Init(WRLS_WKUP_B_GPIO_Port, &GPIO_InitStruct);
 
+  /*Configure GPIO pin : PC1 */
+  GPIO_InitStruct.Pin = GPIO_PIN_1;
+  GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
+  GPIO_InitStruct.Pull = GPIO_NOPULL;
+  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+  GPIO_InitStruct.Alternate = GPIO_AF4_I2C3;
+  HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
+
+  /*Configure GPIO pin : PA7 */
+  GPIO_InitStruct.Pin = GPIO_PIN_7;
+  GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
+  GPIO_InitStruct.Pull = GPIO_NOPULL;
+  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+  GPIO_InitStruct.Alternate = GPIO_AF4_I2C3;
+  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
   /*Configure GPIO pins : WRLS_NOTIFY_Pin Mems_INT_IIS2MDC_Pin USB_IANA_Pin */
   GPIO_InitStruct.Pin = WRLS_NOTIFY_Pin|Mems_INT_IIS2MDC_Pin|USB_IANA_Pin;
   GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
diff --git a/ThreadX_Os/ThreadX_Os.ioc b/ThreadX_Os/ThreadX_Os.ioc
index 26c400b..491ea92 100644
--- a/ThreadX_Os/ThreadX_Os.ioc
+++ b/ThreadX_Os/ThreadX_Os.ioc
@@ -84,41 +84,43 @@ Mcu.Pin43=PF6
 Mcu.Pin44=PE10
 Mcu.Pin45=PG6
 Mcu.Pin46=PH1-OSC_OUT (PH1)
-Mcu.Pin47=PE9
-Mcu.Pin48=PG5
-Mcu.Pin49=PD14
+Mcu.Pin47=PC1
+Mcu.Pin48=PA7
+Mcu.Pin49=PE9
 Mcu.Pin5=PH12
-Mcu.Pin50=PC3
-Mcu.Pin51=PF12
-Mcu.Pin52=PE8
-Mcu.Pin53=PB10
-Mcu.Pin54=PD10
-Mcu.Pin55=PD13
-Mcu.Pin56=PG2
-Mcu.Pin57=PF14
-Mcu.Pin58=PB11
-Mcu.Pin59=PB12
+Mcu.Pin50=PG5
+Mcu.Pin51=PD14
+Mcu.Pin52=PC3
+Mcu.Pin53=PF12
+Mcu.Pin54=PE8
+Mcu.Pin55=PB10
+Mcu.Pin56=PD10
+Mcu.Pin57=PD13
+Mcu.Pin58=PG2
+Mcu.Pin59=PF14
 Mcu.Pin6=PH3-BOOT0
-Mcu.Pin60=PB15
-Mcu.Pin61=PF11
-Mcu.Pin62=PE11
-Mcu.Pin63=PB1
-Mcu.Pin64=PF15
-Mcu.Pin65=VP_ICACHE_VS_ICACHE
-Mcu.Pin66=VP_LPBAMQUEUE_VS_QUEUE
-Mcu.Pin67=VP_PWR_VS_DBSignals
-Mcu.Pin68=VP_PWR_VS_SECSignals
-Mcu.Pin69=VP_PWR_VS_LPOM
+Mcu.Pin60=PB11
+Mcu.Pin61=PB12
+Mcu.Pin62=PB15
+Mcu.Pin63=PF11
+Mcu.Pin64=PE11
+Mcu.Pin65=PB1
+Mcu.Pin66=PF15
+Mcu.Pin67=VP_ICACHE_VS_ICACHE
+Mcu.Pin68=VP_LPBAMQUEUE_VS_QUEUE
+Mcu.Pin69=VP_PWR_VS_DBSignals
 Mcu.Pin7=PB5
-Mcu.Pin70=VP_SYS_VS_tim6
-Mcu.Pin71=VP_THREADX_VS_RTOSJjThreadXJjCoreJjDefault
-Mcu.Pin72=VP_TIM1_VS_ControllerModeClock
-Mcu.Pin73=VP_LPBAM_VS_SIG1
-Mcu.Pin74=VP_LPBAM_VS_SIG4
-Mcu.Pin75=VP_MEMORYMAP_VS_MEMORYMAP
+Mcu.Pin70=VP_PWR_VS_SECSignals
+Mcu.Pin71=VP_PWR_VS_LPOM
+Mcu.Pin72=VP_SYS_VS_tim6
+Mcu.Pin73=VP_THREADX_VS_RTOSJjThreadXJjCoreJjDefault
+Mcu.Pin74=VP_TIM1_VS_ControllerModeClock
+Mcu.Pin75=VP_LPBAM_VS_SIG1
+Mcu.Pin76=VP_LPBAM_VS_SIG4
+Mcu.Pin77=VP_MEMORYMAP_VS_MEMORYMAP
 Mcu.Pin8=PD4
 Mcu.Pin9=PC10
-Mcu.PinsNb=76
+Mcu.PinsNb=78
 Mcu.ThirdPartyNb=0
 Mcu.UserConstants=
 Mcu.UserName=STM32U585AIIxQ
@@ -168,6 +170,8 @@ PA15\ (JTDI).GPIOParameters=GPIO_Label
 PA15\ (JTDI).GPIO_Label=USB.UCPD_CC1
 PA15\ (JTDI).Locked=true
 PA15\ (JTDI).Signal=UCPD1_CC1
+PA7.Locked=true
+PA7.Signal=I2C3_SCL
 PA8.Signal=S_TIM1_CH1
 PA9.GPIOParameters=GPIO_Label
 PA9.GPIO_Label=T.VCP_TX
@@ -209,6 +213,8 @@ PB8.Signal=FDCAN1_RX
 PB9.Locked=true
 PB9.Mode=FDCAN_Activate
 PB9.Signal=FDCAN1_TX
+PC1.Locked=true
+PC1.Signal=I2C3_SDA
 PC10.GPIOParameters=GPIO_Label
 PC10.GPIO_Label=WRLS.UART4_TX
 PC10.Locked=true