From 570bc7b49b75a339b9492804c16a31f246e871a7 Mon Sep 17 00:00:00 2001
From: Giovanni Di Sirio <gdisirio@gmail.com>
Date: Thu, 22 Apr 2021 08:48:29 +0000
Subject: [PATCH] Wrong DMA initializations.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@14259 27425a3e-05d8-49a3-a47f-9c15f0e5edd8
---
 demos/RP/RT-RP2040-PICO/main.c          | 17 +++++++++++++++++
 os/hal/ports/RP/LLD/SPIv1/hal_spi_lld.c |  4 ++--
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/demos/RP/RT-RP2040-PICO/main.c b/demos/RP/RT-RP2040-PICO/main.c
index a7d6d6d8e..4ab48018d 100644
--- a/demos/RP/RT-RP2040-PICO/main.c
+++ b/demos/RP/RT-RP2040-PICO/main.c
@@ -17,6 +17,18 @@
 #include "ch.h"
 #include "hal.h"
 
+void spi_cb(SPIDriver *spip) {
+
+  (void)spip;
+}
+
+SPIConfig spicfg1 = {
+  .end_cb   = spi_cb,
+  .ssline   = 4U,
+  .SSPCR0   = 0U,
+  .SSPCPSR  = 0U
+};
+
 semaphore_t blinker_sem;
 
 /*
@@ -58,6 +70,11 @@ int main(void) {
    */
   palSetLineMode(25U, PAL_MODE_OUTPUT_PUSHPULL | PAL_RP_PAD_DRIVE12);
 
+  /*
+   * Settin up SPI0.
+   */
+  spiStart(&SPID0, &spicfg1);
+
   /*
    * Creates the blinker thread.
    */
diff --git a/os/hal/ports/RP/LLD/SPIv1/hal_spi_lld.c b/os/hal/ports/RP/LLD/SPIv1/hal_spi_lld.c
index 1e7238c6e..18e158e1c 100644
--- a/os/hal/ports/RP/LLD/SPIv1/hal_spi_lld.c
+++ b/os/hal/ports/RP/LLD/SPIv1/hal_spi_lld.c
@@ -203,8 +203,8 @@ void spi_lld_start(SPIDriver *spip) {
     }
 
     /* DMA setup.*/
-    dmaChannelSetSourceX(spip->dmarx, (uint32_t)&spip->spi->SSPDR);
-    dmaChannelSetDestinationX(spip->dmatx, (uint32_t)&spip->spi->SSPDR);
+    dmaChannelSetDestinationX(spip->dmarx, (uint32_t)&spip->spi->SSPDR);
+    dmaChannelSetSourceX(spip->dmatx, (uint32_t)&spip->spi->SSPDR);
   }
 
   /* Configuration-dependent DMA settings.*/