1 files changed, 87 insertions, 0 deletions
diff --git a/os/hal/ports/MSP430X/hal_lld.c b/os/hal/ports/MSP430X/hal_lld.c
new file mode 100644
index 0000000..872fe97
--- /dev/null
+++ b/os/hal/ports/MSP430X/hal_lld.c
@@ -0,0 +1,87 @@
+/*
+    ChibiOS - Copyright (C) 2016 Andrew Wygle aka awygle
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+/**
+ * @file    MSP430X/hal_lld.c
+ * @brief   MSP430X HAL subsystem low level driver source.
+ *
+ * @addtogroup HAL
+ * @{
+ */
+
+#include "hal.h"
+
+/*===========================================================================*/
+/* Driver local definitions.                                                 */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables and types.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver interrupt handlers.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions.                                                */
+/*===========================================================================*/
+
+/**
+ * @brief   Low level HAL driver initialization.
+ *
+ * @notapi
+ */
+void hal_lld_init(void) {
+  /* Disable watchdog */
+  /* TODO Real watchdog support */
+  WDTCTL = WDTPW | WDTHOLD;
+  /* Init clock system */
+  CSCTL0 = CSKEY; /* unlock clock system */
+  CSCTL1 = MSP430X_DCOSEL;
+  CSCTL2 = (MSP430X_ACLK_SRC << 8) | (MSP430X_SMCLK_SRC << 4) | (MSP430X_MCLK_SRC);
+  CSCTL3 = (DIVIDER(MSP430X_ACLK_DIV) << 8) | (DIVIDER(MSP430X_SMCLK_DIV) << 4) | (DIVIDER(MSP430X_MCLK_DIV));
+  CSCTL4 = (MSP430X_HFXTCLK_DRIVE << 14) | (MSP430X_HFXTCLK_BYPASS << 12) | (MSP430X_HFFREQ << 10) | HFXTOFF | \
+           (MSP430X_LFXTCLK_DRIVE << 6) | (MSP430X_LFXTCLK_BYPASS << 4) | VLOOFF | LFXTOFF;
+  CSCTL6 = (MODCLKREQEN) | (SMCLKREQEN) | (MCLKREQEN) | (ACLKREQEN);
+  #if defined(MSP430X_USE_HFXT) && defined(MSP430X_USE_LFXT)
+  do {
+    CSCTL5 &= ~(HFXTOFFG | LFXTOFFG);
+    SFRIFG1 &= ~OFIFG;
+  } while (SFRIFG1 & OFIFG);
+  #elif defined(MSP430X_USE_HFXT)
+  do {
+    CSCTL5 &= ~(HFXTOFFG);
+    SFRIFG1 &= ~OFIFG;
+  } while (SFRIFG1 & OFIFG);
+  #elif defined(MSP430X_USE_LFXT)
+  do {
+    CSCTL5 &= ~(LFXTOFFG);
+    SFRIFG1 &= ~OFIFG;
+  } while (SFRIFG1 & OFIFG);
+  #endif
+  CSCTL0_H = 0xFF; /* Lock clock system */
+}
+
+/** @} */