cabc797a2d
1. Update the copyright information - 2009 => 2011 2. Add external oscillator configuration routine in "rt_hw_board_init()" - Before, it is set by default frequency, 32MHz - Now it can be set by user specified frequency 3. Add ADC and ACMP (analog comparator) drivers 4. Clarify the MCU and target board define in "rtconfig.py" git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1296 bbd45198-f89e-11dd-88c7-29a3b14d5316
73 lines
2.7 KiB
C
73 lines
2.7 KiB
C
/******************************************************************//**
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* @file stack.c
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* @brief This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2011, RT-Thread Development Team
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* @author Bernard, onelife
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* @version 0.4 beta
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**********************************************************************
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* @section License
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* The license and distribution terms for this file may be found in the file LICENSE in this
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* distribution or at http://www.rt-thread.org/license/LICENSE
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**********************************************************************
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* @section Change Logs
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* Date Author Notes
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* 2006-08-23 Bernard first version
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* 2011-02-14 onelife Modify for EFM32
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*********************************************************************/
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/******************************************************************//**
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* @addtogroup cortex-m3
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* @{
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*********************************************************************/
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/* Includes -------------------------------------------------------------------*/
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#include <rtthread.h>
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/* Private typedef -------------------------------------------------------------*/
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/* Private define --------------------------------------------------------------*/
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/* Private macro --------------------------------------------------------------*/
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/* Private variables ------------------------------------------------------------*/
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/* Private function prototypes ---------------------------------------------------*/
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/* Private functions ------------------------------------------------------------*/
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/**
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* This function will initialize thread stack
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*
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* @param tentry the entry of thread
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* @param parameter the parameter of entry
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* @param stack_addr the beginning stack address
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* @param texit the function will be called when thread exit
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*
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* @return stack address
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*/
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rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter,
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rt_uint8_t *stack_addr, void *texit)
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{
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unsigned long *stk;
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stk = (unsigned long *)stack_addr;
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*(stk) = 0x01000000L; /* PSR */
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*(--stk) = (unsigned long)tentry; /* entry point, pc */
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*(--stk) = (unsigned long)texit; /* lr */
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*(--stk) = 0; /* r12 */
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*(--stk) = 0; /* r3 */
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*(--stk) = 0; /* r2 */
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*(--stk) = 0; /* r1 */
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*(--stk) = (unsigned long)parameter; /* r0 : argument */
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*(--stk) = 0; /* r11 */
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*(--stk) = 0; /* r10 */
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*(--stk) = 0; /* r9 */
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*(--stk) = 0; /* r8 */
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*(--stk) = 0; /* r7 */
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*(--stk) = 0; /* r6 */
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*(--stk) = 0; /* r5 */
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*(--stk) = 0; /* r4 */
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/* return task's current stack address */
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return (rt_uint8_t *)stk;
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}
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/******************************************************************//**
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* @}
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*********************************************************************/
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