From 09e3550f3b17e451d3eae881fe71adab527c57de Mon Sep 17 00:00:00 2001
From: David Garske <david@wolfssl.com>
Date: Tue, 5 Dec 2023 10:38:56 -0800
Subject: [PATCH] Add support for overriding the PORT/PIN for the STM32 Cube
 HAL.

---
 hal/tpm_io_st.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/hal/tpm_io_st.c b/hal/tpm_io_st.c
index 1764b27..8809cd3 100644
--- a/hal/tpm_io_st.c
+++ b/hal/tpm_io_st.c
@@ -146,6 +146,12 @@
 
 #else /* STM32 CubeMX Hal SPI */
     #define STM32_CUBEMX_SPI_TIMEOUT 250
+    #ifndef USE_SPI_CS_PORT
+    #define USE_SPI_CS_PORT GPIOA
+    #endif
+    #ifndef USE_SPI_CS_PIN
+    #define USE_SPI_CS_PIN 15
+    #endif
     int TPM2_IoCb_STCubeMX_SPI(TPM2_CTX* ctx, const byte* txBuf, byte* rxBuf,
         word16 xferSz, void* userCtx)
     {
@@ -158,7 +164,7 @@
 
         __HAL_SPI_ENABLE(hspi);
     #ifndef USE_HW_SPI_CS
-        HAL_GPIO_WritePin(GPIOA, GPIO_PIN_15, GPIO_PIN_RESET); /* active low */
+        HAL_GPIO_WritePin(USE_SPI_CS_PORT, USE_SPI_CS_PIN, GPIO_PIN_RESET); /* active low */
     #endif
 
     #ifdef WOLFTPM_CHECK_WAIT_STATE
@@ -167,7 +173,7 @@
             TPM_TIS_HEADER_SZ, STM32_CUBEMX_SPI_TIMEOUT);
         if (status != HAL_OK) {
         #ifndef USE_HW_SPI_CS
-            HAL_GPIO_WritePin(GPIOA, GPIO_PIN_15, GPIO_PIN_SET);
+            HAL_GPIO_WritePin(USE_SPI_CS_PORT, USE_SPI_CS_PIN, GPIO_PIN_SET);
         #endif
             __HAL_SPI_DISABLE(hspi);
             return TPM_RC_FAILURE;
@@ -187,7 +193,7 @@
         #endif
             if (timeout <= 0) {
             #ifndef USE_HW_SPI_CS
-                HAL_GPIO_WritePin(GPIOA, GPIO_PIN_15, GPIO_PIN_SET);
+                HAL_GPIO_WritePin(USE_SPI_CS_PORT, USE_SPI_CS_PIN, GPIO_PIN_SET);
             #endif
                 __HAL_SPI_DISABLE(hspi);
                 return TPM_RC_FAILURE;
@@ -206,7 +212,7 @@
     #endif /* WOLFTPM_CHECK_WAIT_STATE */
 
     #ifndef USE_HW_SPI_CS
-        HAL_GPIO_WritePin(GPIOA, GPIO_PIN_15, GPIO_PIN_SET);
+        HAL_GPIO_WritePin(USE_SPI_CS_PORT, USE_SPI_CS_PIN, GPIO_PIN_SET);
     #endif
         __HAL_SPI_DISABLE(hspi);