1 files changed, 116 insertions, 0 deletions
diff --git a/os/io/platforms/AT91SAM7X/serial_lld.c b/os/io/platforms/AT91SAM7X/serial_lld.c
new file mode 100644
index 000000000..40b00483d
--- /dev/null
+++ b/os/io/platforms/AT91SAM7X/serial_lld.c
@@ -0,0 +1,116 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+    This file is part of ChibiOS/RT.
+
+    ChibiOS/RT 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 3 of the License, or
+    (at your option) any later version.
+
+    ChibiOS/RT is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file AT91SAM7X/serial_lld.c
+ * @brief AT91SAM7X low level serial driver code
+ * @addtogroup AT91SAM7X_SERIAL
+ * @{
+ */
+
+#include <ch.h>
+#include <serial.h>
+
+#include "at91lib/aic.h"
+
+/** @brief Driver default configuration.*/
+static const SerialDriverConfig default_config = {
+};
+
+/*===========================================================================*/
+/* Low Level Driver local functions.                                         */
+/*===========================================================================*/
+
+/**
+ * @brief USART initialization.
+ * @param[in] u pointer to an USART I/O block
+ * @param[in] config the architecture-dependent serial driver configuration
+ */
+void usart_init(AT91PS_USART u, const SerialDriverConfig *config) {
+
+  /* Disables IRQ sources and stop operations.*/
+  u->US_IDR = 0xFFFFFFFF;
+  u->US_CR = AT91C_US_RSTRX | AT91C_US_RSTTX | AT91C_US_RSTSTA;
+
+  /* New parameters setup.*/
+  if (config->mr & AT91C_US_OVER)
+    u->US_BRGR = MCK / (config->speed * 8);
+  else
+    u->US_BRGR = MCK / (config->speed * 16);
+  u->US_MR = config->mr;
+  u->US_RTOR = 0;
+  u->US_TTGR = 0;
+
+  /* Enables operations and IRQ sources.*/
+  u->US_CR = AT91C_US_RXEN | AT91C_US_TXEN | AT91C_US_DTREN | AT91C_US_RTSEN;
+  u->US_IER = AT91C_US_RXRDY | AT91C_US_OVRE | AT91C_US_FRAME | AT91C_US_PARE |
+              AT91C_US_RXBRK;
+}
+
+/**
+ * @brief USART de-initialization.
+ * @param[in] u pointer to an USART I/O block
+ */
+void usart_deinit(AT91PS_USART u) {
+
+}
+
+
+/*===========================================================================*/
+/* Low Level Driver interrupt handlers.                                      */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Low Level Driver exported functions.                                      */
+/*===========================================================================*/
+
+/**
+ * Low level serial driver initialization.
+ */
+void sd_lld_init(void) {
+
+}
+
+/**
+ * @brief Low level serial driver configuration and (re)start.
+ *
+ * @param[in] sdp pointer to a @p SerialDriver object
+ * @param[in] config the architecture-dependent serial driver configuration.
+ *                   If this parameter is set to @p NULL then a default
+ *                   configuration is used.
+ */
+void sd_lld_start(SerialDriver *sdp, const SerialDriverConfig *config) {
+
+  if (config == NULL)
+    config = &default_config;
+
+}
+
+/**
+ * @brief Low level serial driver stop.
+ * @details De-initializes the USART, stops the associated clock, resets the
+ *          interrupt vector.
+ *
+ * @param[in] sdp pointer to a @p SerialDriver object
+ */
+void sd_lld_stop(SerialDriver *sdp) {
+
+}
+
+/** @} */