import ChibiOS 2.0.8

ChibiOS_2.0.8/os/hal/platforms/STM8/hal_lld.c

@@ -0,0 +1,118 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 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/>.
+
+                                      ---
+
+    A special exception to the GPL can be applied should you wish to distribute
+    a combined work that includes ChibiOS/RT, without being obliged to provide
+    the source code for any proprietary components. See the file exception.txt
+    for full details of how and when the exception can be applied.
+*/
+
+/**
+ * @file    STM8/hal_lld.c
+ * @brief   STM8 HAL subsystem low level driver source.
+ *
+ * @addtogroup STM8_HAL
+ * @{
+ */
+
+#include "ch.h"
+#include "hal.h"
+
+/*===========================================================================*/
+/* Driver exported variables.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables.                                                   */
+/*===========================================================================*/
+
+/**
+ * @brief   PAL setup.
+ * @details Digital I/O ports static configuration as defined in @p board.h.
+ */
+ROMCONST PALConfig pal_default_config =
+{
+  {
+    {VAL_GPIOAODR, 0, VAL_GPIOADDR, VAL_GPIOACR1, VAL_GPIOACR2},
+    {VAL_GPIOBODR, 0, VAL_GPIOBDDR, VAL_GPIOBCR1, VAL_GPIOBCR2},
+    {VAL_GPIOCODR, 0, VAL_GPIOCDDR, VAL_GPIOCCR1, VAL_GPIOCCR2},
+    {VAL_GPIODODR, 0, VAL_GPIODDDR, VAL_GPIODCR1, VAL_GPIODCR2},
+    {VAL_GPIOEODR, 0, VAL_GPIOEDDR, VAL_GPIOECR1, VAL_GPIOECR2},
+    {VAL_GPIOFODR, 0, VAL_GPIOFDDR, VAL_GPIOFCR1, VAL_GPIOFCR2},
+    {VAL_GPIOGODR, 0, VAL_GPIOGDDR, VAL_GPIOGCR1, VAL_GPIOGCR2},
+    {VAL_GPIOHODR, 0, VAL_GPIOHDDR, VAL_GPIOHCR1, VAL_GPIOHCR2},
+    {VAL_GPIOIODR, 0, VAL_GPIOIDDR, VAL_GPIOICR1, VAL_GPIOICR2}
+  }
+};
+
+/*===========================================================================*/
+/* Driver local functions.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver interrupt handlers.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions.                                                */
+/*===========================================================================*/
+
+/**
+ * @brief   Low level HAL driver initialization.
+ */
+void hal_lld_init(void) {
+
+#if STM8_CLOCK_SOURCE != CLK_SOURCE_DEFAULT
+#if STM8_CLOCK_SOURCE == CLK_SOURCE_HSI
+  CLK_ICKR    = 1;                  /* HSIEN */
+  while ((CLK_ICKR & 2) == 0)       /* HSIRDY */
+    ;
+#elif STM8_CLOCK_SOURCE == CLK_SOURCE_LSI
+  CLK_ICKR    = 8;                  /* LSIEN */
+  while ((CLK_ICKR & 16) == 0)      /* LSIRDY */
+    ;
+#else /* STM8_CLOCK_SOURCE == CLK_SOURCE_HSE */
+  CLK_ECKR    = 1;                  /* HSEEN */
+  while ((CLK_ECKR & 2) == 0)       /* HSERDY */
+    ;
+#endif
+#if STM8_CLOCK_SOURCE != CLK_SOURCE_HSI
+  /* Switching clock (manual switch mode).*/
+  CLK_SWCR    = 0;
+  CLK_SWR     = STM8_CLOCK_SOURCE;
+  while ((CLK_SWCR & 8) == 0)       /* SWIF */
+    ;
+  CLK_SWCR    = 2;                  /* SWEN */
+#endif
+  /* Setting up clock dividers.*/
+  CLK_CKDIVR  = (STM8_HSI_DIVIDER << 3) | (STM8_CPU_DIVIDER << 0);
+
+  /* Clocks initially all disabled.*/
+  CLK_PCKENR1 = 0;
+  CLK_PCKENR2 = 0;
+
+  /* Other clock related initializations.*/
+  CLK_CSSR    = 0;
+  CLK_CCOR    = 0;
+  CLK_CANCCR  = 0;
+#endif /* STM8_CLOCK_SOURCE != CLK_SOURCE_DEFAULT */
+}
+
+/** @} */