From 39752647dfea81c0339630af6ecfd449856625ad Mon Sep 17 00:00:00 2001
From: Adema <h.adema@rug.nl>
Date: Wed, 28 May 2025 09:48:07 +0200
Subject: [PATCH] Upload files to "SPI2Slave_T4"

Added swap pins function. (MOSI / MISO)
---
 SPI2Slave_T4/SPI2Slave_T4.h   |  1 +
 SPI2Slave_T4/SPI2Slave_T4.tpp | 10 +++++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/SPI2Slave_T4/SPI2Slave_T4.h b/SPI2Slave_T4/SPI2Slave_T4.h
index bd9ad6b..a5a904d 100644
--- a/SPI2Slave_T4/SPI2Slave_T4.h
+++ b/SPI2Slave_T4/SPI2Slave_T4.h
@@ -34,6 +34,7 @@ SPI2Slave_T4_CLASS class SPI2Slave_T4 : public SPI2Slave_T4_Base {
     void onReceive(_SPI_ptr handler) { _spihandler = handler; }
     bool active();
     bool available();
+    void swapPins(bool enable = 1);
     void pushr(uint32_t data);
     uint32_t popr();
 
diff --git a/SPI2Slave_T4/SPI2Slave_T4.tpp b/SPI2Slave_T4/SPI2Slave_T4.tpp
index 17db783..7368db6 100644
--- a/SPI2Slave_T4/SPI2Slave_T4.tpp
+++ b/SPI2Slave_T4/SPI2Slave_T4.tpp
@@ -42,6 +42,14 @@ SPI2Slave_T4_FUNC SPI2Slave_T4_OPT::SPI2Slave_T4() {
 }
 
 
+SPI2Slave_T4_FUNC void SPI2Slave_T4_OPT::swapPins(bool enable) {
+  SLAVE_PORT_ADDR;
+  SLAVE_CR &= ~LPSPI_CR_MEN; /* Disable Module */
+  SLAVE_CFGR1 = (SLAVE_CFGR1 & 0xFCFFFFFF) | (enable) ? (3UL << 24) : (0UL << 24);
+  SLAVE_CR |= LPSPI_CR_MEN; /* Enable Module */
+}
+
+
 SPI2Slave_T4_FUNC bool SPI2Slave_T4_OPT::active() {
   SLAVE_PORT_ADDR;
   return ( !(SLAVE_SR & (1UL << 9)) ) ? 1 : 0;
@@ -90,7 +98,7 @@ SPI2Slave_T4_FUNC void __attribute__((section(".fustrun"))) SPI2Slave_T4_OPT::SL
   }
   if ( (SLAVE_SR & (1UL << 1)) ) {
     spiRx[spiRxIdx] = SLAVE_RDR;
-    if (spiRxIdx < 255) spiRxIdx++;
+    if (spiRxIdx < 256) spiRxIdx++;
     SLAVE_SR = (1UL << 1);
   }