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author | bnewbold <bnewbold@robocracy.org> | 2010-03-30 20:52:45 -0400 |
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committer | bnewbold <bnewbold@robocracy.org> | 2010-03-30 20:52:45 -0400 |
commit | e7d600494579ef319b20221769c3b2fe12962243 (patch) | |
tree | 5c95101e295bcfdd7f9f4292ce9204ddf7e7f662 /core/wiring.c | |
parent | 8d6bf3b196c2a0bc1adda4a04669e54fdc5b65cb (diff) | |
download | librambutan-e7d600494579ef319b20221769c3b2fe12962243.tar.gz librambutan-e7d600494579ef319b20221769c3b2fe12962243.zip |
Major hierarchy reorganization; see README.
copy-to-ide and Makefile updated to conform; .gitignore added;
LICENSE added
Diffstat (limited to 'core/wiring.c')
-rw-r--r-- | core/wiring.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/core/wiring.c b/core/wiring.c new file mode 100644 index 0000000..04de78a --- /dev/null +++ b/core/wiring.c @@ -0,0 +1,116 @@ +/* ***************************************************************************** + * This program 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. + * + * This program 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/>. + * + * Created: 12/18/09 02:41:47 + * Copyright (c) 2009 Perry L. Hung. All rights reserved. + * + * ****************************************************************************/ + +/** + * @file wiring.c + * + * @brief + */ + +#include "wiring.h" +#include "stm32f10x_flash.h" +#include "stm32f10x_rcc.h" +#include "stm32f10x_map.h" +#include "stm32f10x_nvic.h" +#include "systick.h" +#include "gpio.h" + +void RCC_Configuration(void); +void NVIC_Configuration(void); + +void init(void) { + RCC_Configuration(); + RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | + RCC_APB2Periph_GPIOB | + RCC_APB2Periph_GPIOC | + RCC_APB2Periph_AFIO + , ENABLE); + NVIC_Configuration(); + + systick_init(); + + gpio_init(); + + adc_init(); + + timer_init(1, 1); + timer_init(2, 1); + timer_init(3, 1); + timer_init(4, 1); +} + +void NVIC_Configuration(void) { +#ifdef VECT_TAB_ROM + NVIC_SetVectorTable(USER_ADDR_ROM, 0x0); +#warning writing to ROM +#elif defined VECT_TAB_RAM + NVIC_SetVectorTable(USER_ADDR_RAM, 0x0); +#warning writing to RAM +#else // VECT_TAB_BASE + /* Set the Vector Table base location at 0x08000000 */ + NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0); +#endif +} + + +void RCC_Configuration(void) { + ErrorStatus HSEStartUpStatus; + /* RCC system reset(for debug purpose) */ + RCC_DeInit(); + + /* Enable HSE */ + RCC_HSEConfig(RCC_HSE_ON); + + /* Wait till HSE is ready */ + HSEStartUpStatus = RCC_WaitForHSEStartUp(); + + if(HSEStartUpStatus == SUCCESS) { + /* Enable Prefetch Buffer */ + FLASH_PrefetchBufferCmd( (u32)FLASH_PrefetchBuffer_Enable); + + /* Flash 2 wait state */ + FLASH_SetLatency(FLASH_Latency_2); + + /* HCLK = SYSCLK */ + RCC_HCLKConfig(RCC_SYSCLK_Div1); + + /* PCLK2 = HCLK APB2 Periphs, no prescaler 72MHz */ + RCC_PCLK2Config(RCC_HCLK_Div1); + + /* PCLK1 = HCLK/2 APB1 periphs = 36MHZ*/ + RCC_PCLK1Config(RCC_HCLK_Div2); + + /* PLLCLK = 8MHz * 9 = 72 MHz */ + RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9); + + /* Enable PLL */ + RCC_PLLCmd(ENABLE); + + /* Wait till PLL is ready */ + while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET) + ; + + /* Select PLL as system clock source */ + RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK); + + /* Wait till PLL is used as system clock source */ + while(RCC_GetSYSCLKSource() != 0x08) + ; + } +} |