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Diffstat (limited to 'firmware/target/arm/imx31/uart-imx31.c')
-rw-r--r--firmware/target/arm/imx31/uart-imx31.c72
1 files changed, 72 insertions, 0 deletions
diff --git a/firmware/target/arm/imx31/uart-imx31.c b/firmware/target/arm/imx31/uart-imx31.c
new file mode 100644
index 0000000000..c54ac0c0ce
--- /dev/null
+++ b/firmware/target/arm/imx31/uart-imx31.c
@@ -0,0 +1,72 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Alan Korr & Nick Robinson
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
+#include "config.h"
+#include "button.h"
+#include "cpu.h"
+#include "system.h"
+#include "kernel.h"
+#include "serial.h"
+
+#include "serial-imx31.h"
+
+void serial_setup(void)
+{
+#ifdef UART_INT /*enable UART Interrupts */
+ UCR1_1 |= (EUARTUCR1_TRDYEN | EUARTUCR1_RRDYEN | EUARTUCR1_TXMPTYEN);
+ UCR4_1 |= (EUARTUCR4_TCEN);
+#else /*disable UART Interrupts*/
+ UCR1_1 &= ~(EUARTUCR1_TRDYEN | EUARTUCR1_RRDYEN | EUARTUCR1_TXMPTYEN);
+ UCR4_1 &= ~(EUARTUCR4_TCEN);
+#endif
+ UCR1_1 |= EUARTUCR1_UARTEN;
+ UCR2_1 |= (EUARTUCR2_TXEN | EUARTUCR2_RXEN | EUARTUCR2_IRTS);
+
+ /* Tx,Rx Interrupt Trigger levels, Disable for now*/
+ /*UFCR1 |= (UFCR1_TXTL_32 | UFCR1_RXTL_32);*/
+}
+
+int tx_rdy(void)
+{
+ if((UTS1 & EUARTUTS_TXEMPTY))
+ return 1;
+ else
+ return 0;
+}
+
+/*Not ready...After first Rx, UTS1 & UTS1_RXEMPTY
+ keeps returning true*/
+int rx_rdy(void)
+{
+ if(!(UTS1 & EUARTUTS_RXEMPTY))
+ return 1;
+ else
+ return 0;
+}
+
+void tx_writec(unsigned char c)
+{
+ UTXD1=(int) c;
+}
+