From: Matt Mullins <mmullins@mmlx.us>
Date: Sun, 23 Dec 2012 23:30:35 +0000 (-0800)
Subject: Re-enable the UART0 RX DMA after reading a byte.
X-Git-Url: http://git.mmlx.us/?a=commitdiff_plain;h=refs%2Fheads%2Fserial;p=stellaris%2Fled_blink.git

Re-enable the UART0 RX DMA after reading a byte.

Apparently it gets disabled after a basic-mode transfer completes.
---

diff --git a/main.c b/main.c
index d647b9c..e789188 100644
--- a/main.c
+++ b/main.c
@@ -114,6 +114,8 @@ void uart0_isr() {
 
 	// Enable more DMAs
 	UART0_RX_DMA_BASE[2] |= UDMA_CHCTL_XFERMODE_BASIC;
+	// DMA is automagically disabled when BASIC mode completes, apparently
+	UDMA_ENASET_R = (1 << 8); // UART0 RX is channel 8
 }
 
 __attribute__((isr))