From b69948bc4883423fde36e63e2ef5d2d16f7ec71c Mon Sep 17 00:00:00 2001 From: gdisirio Date: Fri, 5 Mar 2010 19:01:12 +0000 Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1713 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- boards/RAISONANCE_REVA_STM8S/board.c | 67 ++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 boards/RAISONANCE_REVA_STM8S/board.c (limited to 'boards/RAISONANCE_REVA_STM8S/board.c') diff --git a/boards/RAISONANCE_REVA_STM8S/board.c b/boards/RAISONANCE_REVA_STM8S/board.c new file mode 100644 index 000000000..542f95c2c --- /dev/null +++ b/boards/RAISONANCE_REVA_STM8S/board.c @@ -0,0 +1,67 @@ +/* + 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 . +*/ + +#include "ch.h" +#include "hal.h" + +/* + * TIM 2 clock after the prescaler. + */ +#define TIM2_CLOCK (SYSCLK / 16) +#define TIM2_ARR ((TIM2_CLOCK / CH_FREQUENCY) - 1) + +/* + * TIM2 interrupt handler. + */ +CH_IRQ_HANDLER(13) { + + CH_IRQ_PROLOGUE(); + + chSysLockFromIsr(); + chSysTimerHandlerI(); + chSysUnlockFromIsr(); + + TIM2_SR1 = 0; + + CH_IRQ_EPILOGUE(); +} + +/* + * Board initialization code. + */ +void hwinit(void) { + + /* + * HAL initialization. + */ + halInit(); + + /* + * TIM2 initialization as system tick. + */ + CLK_PCKENR1 |= 32; /* PCKEN15, TIM2 clock source.*/ + TIM2_PSCR = 4; /* Prescaler divide by 2^4=16.*/ + TIM2_ARRH = TIM2_ARR >> 8; + TIM2_ARRL = TIM2_ARR; + TIM2_CNTRH = 0; + TIM2_CNTRL = 0; + TIM2_SR1 = 0; + TIM2_IER = 1; /* UIE */ + TIM2_CR1 = 1; /* CEN */ +} -- cgit v1.2.3