From 219606d05da820b72a492330256a143d5176317c Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Mon, 1 Nov 2010 14:05:59 +0000
Subject: Added STM8 SPI demo.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@2320 35acf78f-673a-0410-8e92-d51de3d6d3f4
---
 os/hal/platforms/STM8/spi_lld.c | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

(limited to 'os')

diff --git a/os/hal/platforms/STM8/spi_lld.c b/os/hal/platforms/STM8/spi_lld.c
index 9f7c057a3..e929f4b69 100644
--- a/os/hal/platforms/STM8/spi_lld.c
+++ b/os/hal/platforms/STM8/spi_lld.c
@@ -87,18 +87,12 @@ CH_IRQ_HANDLER(10) {
       goto exit_isr;
     }
   }
-  /* Loading the DR register like it is a FIFO with depth>1 in order to
-     handle the case where the shift register is empty too.*/
-  while ((SPI->SR & SPI_SR_TXE) != 0) {
+  /* Loading the DR register.*/
+  if ((SPI->SR & SPI_SR_TXE) != 0) {
     if (SPID1.spd_txptr != NULL)
       SPI->DR = *SPID1.spd_txptr++;
     else
       SPI->DR = 0xFF;
-    if (--SPID1.spd_txcnt == 0) {
-      /* Stops just the TX interrupt source.*/
-      SPI->ICR &= ~SPI_ICR_TXEI;
-      break;
-    }
   }
 
 exit_isr:
@@ -132,11 +126,11 @@ void spi_lld_init(void) {
 void spi_lld_start(SPIDriver *spip) {
 
   /* Clock activation.*/
-  CLK->PCKENR1 |= CLK_PCKENR1_SPI;              /* PCKEN11, clock source.       */
+  CLK->PCKENR1 |= CLK_PCKENR1_SPI;              /* PCKEN11, clock source.   */
 
   /* Configuration.*/
-  SPI->CR2 = SPI_CR2_SSI;
-  SPI->CR1 = spip->spd_config->spc_cr1 | SPI_CR1_SPE;
+  SPI->CR2 = 0;
+  SPI->CR1 = spip->spd_config->spc_cr1 | SPI_CR1_MSTR | SPI_CR1_SPE;
 }
 
 /**
@@ -156,7 +150,7 @@ void spi_lld_stop(SPIDriver *spip) {
   SPI->ICR = 0;
 
   /* Clock de-activation.*/
-  CLK->PCKENR1 &= ~CLK_PCKENR1_SPI;             /* PCKEN11, clock source.       */
+  CLK->PCKENR1 &= (uint8_t)~CLK_PCKENR1_SPI;    /* PCKEN11, clock source.   */
 }
 
 /**
-- 
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