From db98d0cf7bba43e69419e79b83961e36f58cb557 Mon Sep 17 00:00:00 2001
From: Alex Voinea <voinea.dragos.alexandru@gmail.com>
Date: Mon, 17 May 2021 09:11:11 +0300
Subject: [PATCH] Add SPI TxRx function

---
 src/hal/spi.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/hal/spi.h b/src/hal/spi.h
index dbf3c1a..c45c251 100644
--- a/src/hal/spi.h
+++ b/src/hal/spi.h
@@ -33,6 +33,13 @@ namespace spi {
         hspi->SPCRx = (0 << SPIE) | (1 << SPE) | (0 << DORD) | (1 << MSTR) | (0 << CPOL) | (0 << CPHA) | (spr << SPR0);
         hspi->SPSRx = (spi2x << SPI2X);
     }
+
+    __attribute__((always_inline)) inline uint8_t TxRx(SPI_TypeDef *const hspi, uint8_t val) {
+        hspi->SPDRx = val;
+        while (!(hspi->SPSRx & (1 << SPIF)))
+            ;
+        return hspi->SPDRx;
+    }
 }
 }