ChibiOS 2.6.8, until I can figure out where to get it from git.

2025-12-11 02:02:31 +00:00 · 2015-07-08 08:40:23 -07:00
parent dc6fee8370
commit e1eea8e08a
1929 changed files with 575326 additions and 0 deletions
--- a/firmware/chibios/os/hal/platforms/LPC11Uxx/hal_lld.c
+++ b/firmware/chibios/os/hal/platforms/LPC11Uxx/hal_lld.c
@@ -0,0 +1,116 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+
+    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    LPC11Uxx/hal_lld.c
+ * @brief   LPC11Uxx HAL subsystem low level driver source.
+ *
+ * @addtogroup HAL
+ * @{
+ */
+
+#include "ch.h"
+#include "hal.h"
+
+/*===========================================================================*/
+/* 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) {
+
+  /* SysTick initialization using the system clock.*/
+  nvicSetSystemHandlerPriority(HANDLER_SYSTICK, CORTEX_PRIORITY_SYSTICK);
+  SysTick->LOAD = LPC_SYSCLK / CH_FREQUENCY - 1;
+  SysTick->VAL  = 0;
+  SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk |
+                  SysTick_CTRL_ENABLE_Msk |
+                  SysTick_CTRL_TICKINT_Msk;
+}
+
+/**
+ * @brief   LPC11Uxx clocks and PLL initialization.
+ * @note    All the involved constants come from the file @p board.h.
+ * @note    This function must be invoked only after the system reset.
+ *
+ * @special
+ */
+void lpc_clock_init(void) {
+  unsigned i;
+
+  /* Flash wait states setting, the code takes care to not touch TBD bits.*/
+  LPC_FLASHCTRL->FLASHCFG = (LPC_FLASHCTRL->FLASHCFG & ~3) |
+                            LPC_FLASHCFG_FLASHTIM;
+
+  /* System oscillator initialization if required.*/
+#if LPC_MAINCLK_SOURCE == SYSMAINCLKSEL_PLLOUT
+#if LPC_PLLCLK_SOURCE == SYSPLLCLKSEL_SYSOSC
+  LPC_SYSCON->SYSOSCCTRL = LPC_SYSOSCCTRL;
+  LPC_SYSCON->PDRUNCFG &= ~(1 << 5);            /* System oscillator ON.    */
+  for (i = 0; i < 200; i++)
+    __NOP();                                    /* Stabilization delay.     */
+#endif /* LPC_PLLCLK_SOURCE == SYSPLLCLKSEL_SYSOSC */
+
+  /* PLL initialization if required.*/
+  LPC_SYSCON->SYSPLLCLKSEL = LPC_PLLCLK_SOURCE;
+  LPC_SYSCON->SYSPLLCLKUEN = 1;                 /* Really required?         */
+  LPC_SYSCON->SYSPLLCLKUEN = 0;
+  LPC_SYSCON->SYSPLLCLKUEN = 1;
+  LPC_SYSCON->SYSPLLCTRL = LPC_SYSPLLCTRL_MSEL | LPC_SYSPLLCTRL_PSEL;
+  LPC_SYSCON->PDRUNCFG &= ~(1 << 7);            /* System PLL ON.           */
+  while ((LPC_SYSCON->SYSPLLSTAT & 1) == 0)     /* Wait PLL lock.           */
+    ;
+#endif /* LPC_MAINCLK_SOURCE == SYSMAINCLKSEL_PLLOUT */
+
+  /* Main clock source selection.*/
+  LPC_SYSCON->MAINCLKSEL = LPC_MAINCLK_SOURCE;
+  LPC_SYSCON->MAINCLKUEN = 1;                   /* Really required?         */
+  LPC_SYSCON->MAINCLKUEN = 0;
+  LPC_SYSCON->MAINCLKUEN = 1;
+  while ((LPC_SYSCON->MAINCLKUEN & 1) == 0)     /* Wait switch completion.  */
+    ;
+
+  /* ABH divider initialization, peripheral clocks are initially disabled,
+     the various device drivers will handle their own setup except GPIO and
+     IOCON that are left enabled.*/
+  LPC_SYSCON->SYSAHBCLKDIV = LPC_SYSABHCLK_DIV;
+  LPC_SYSCON->SYSAHBCLKCTRL = 0x0001005F;
+
+  /* Memory remapping, vectors always in ROM.*/
+  LPC_SYSCON->SYSMEMREMAP = 2;
+}
+
+/** @} */