From 32e57dac2e61e79b029593eb4d34d727bcc10678 Mon Sep 17 00:00:00 2001 From: iperry Date: Thu, 17 Dec 2009 02:37:07 +0000 Subject: Initial commit of library code, moved from leaftest repo git-svn-id: https://leaflabs.googlecode.com/svn/trunk/library@69 749a229e-a60e-11de-b98f-4500b42dc123 --- .../examples/TIM/ComplementarySignals/main.c | 253 +++++++++++++++++++++ 1 file changed, 253 insertions(+) create mode 100755 src/stm32lib/examples/TIM/ComplementarySignals/main.c (limited to 'src/stm32lib/examples/TIM/ComplementarySignals/main.c') diff --git a/src/stm32lib/examples/TIM/ComplementarySignals/main.c b/src/stm32lib/examples/TIM/ComplementarySignals/main.c new file mode 100755 index 0000000..6fa0f26 --- /dev/null +++ b/src/stm32lib/examples/TIM/ComplementarySignals/main.c @@ -0,0 +1,253 @@ +/******************** (C) COPYRIGHT 2008 STMicroelectronics ******************** +* File Name : main.c +* Author : MCD Application Team +* Version : V2.0.1 +* Date : 06/13/2008 +* Description : Main program body +******************************************************************************** +* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS +* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. +* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, +* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE +* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING +* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. +*******************************************************************************/ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f10x_lib.h" + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; +TIM_OCInitTypeDef TIM_OCInitStructure; +TIM_BDTRInitTypeDef TIM_BDTRInitStructure; +u16 CCR1_Val = 32767; +u16 CCR2_Val = 16383; +u16 CCR3_Val = 8191; +ErrorStatus HSEStartUpStatus; + +/* Private function prototypes -----------------------------------------------*/ +void RCC_Configuration(void); +void GPIO_Configuration(void); +void NVIC_Configuration(void); + +/* Private functions ---------------------------------------------------------*/ + +/******************************************************************************* +* Function Name : main +* Description : Main program +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +int main(void) +{ +#ifdef DEBUG + debug(); +#endif + + /* System Clocks Configuration */ + RCC_Configuration(); + + /* GPIO Configuration */ + GPIO_Configuration(); + + /* NVIC configuration */ + NVIC_Configuration(); + + /* ----------------------------------------------------------------------- + TIM1 Configuration to: + + 1/ Generate 3 complementary PWM signals with 3 different duty cycles: + TIM1CLK = 72 MHz, Prescaler = 0, TIM1 counter clock = 72 MHz + TIM1 frequency = TIM1CLK/(TIM1_Period + 1) = 1.098 KHz + + TIM1 Channel1 duty cycle = TIM1->CCR1 / TIM1_Period = 50% + TIM1 Channel1N duty cycle = (TIM1_Period - TIM1_CCR1) / (TIM1_Period + 1) = 50% + + TIM1 Channel2 duty cycle = TIM1_CCR2 / TIM1_Period = 25% + TIM1 Channel2N duty cycle = (TIM1_Period - TIM1_CCR1) / (TIM1_Period + 1) = 75% + + TIM1 Channel3 duty cycle = TIM1_CCR3 / TIM1_Period = 12.5% + TIM1 Channel3N duty cycle = (TIM1_Period - TIM1_CCR3) / (TIM1_Period + 1) = 87.5% + + 2/ Insert a dead time equal to 1.62 us + 3/ Configure the break feature, active at High level, and using the automatic + output enable feature + 4/ Use the Locking parametres level1. + ----------------------------------------------------------------------- */ + + /* Time Base configuration */ + TIM_TimeBaseStructure.TIM_Prescaler = 0; + TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; + TIM_TimeBaseStructure.TIM_Period = 65535; + TIM_TimeBaseStructure.TIM_ClockDivision = 0; + TIM_TimeBaseStructure.TIM_RepetitionCounter = 0; + + TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure); + + /* Channel 1, 2,3 and 4 Configuration in PWM mode */ + TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; + TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; + TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable; + TIM_OCInitStructure.TIM_Pulse = CCR1_Val; + TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; + TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low; + TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set; + TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset; + + TIM_OC1Init(TIM1, &TIM_OCInitStructure); + + TIM_OCInitStructure.TIM_Pulse = CCR2_Val; + TIM_OC2Init(TIM1, &TIM_OCInitStructure); + + TIM_OCInitStructure.TIM_Pulse = CCR3_Val; + TIM_OC3Init(TIM1, &TIM_OCInitStructure); + + /* Automatic Output enable, Break, dead time and lock configuration*/ + TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable; + TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable; + TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_1; + TIM_BDTRInitStructure.TIM_DeadTime = 117; + TIM_BDTRInitStructure.TIM_Break = TIM_Break_Enable; + TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High; + TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable; + + TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure); + + /* TIM1 counter enable */ + TIM_Cmd(TIM1, ENABLE); + + /* Main Output Enable */ + TIM_CtrlPWMOutputs(TIM1, ENABLE); + + while (1) + {} +} + +/******************************************************************************* +* Function Name : RCC_Configuration +* Description : Configures the different system clocks. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void RCC_Configuration(void) +{ + /* 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(FLASH_PrefetchBuffer_Enable); + + /* Flash 2 wait state */ + FLASH_SetLatency(FLASH_Latency_2); + + /* HCLK = SYSCLK */ + RCC_HCLKConfig(RCC_SYSCLK_Div1); + + /* PCLK2 = HCLK */ + RCC_PCLK2Config(RCC_HCLK_Div1); + + /* PCLK1 = HCLK/2 */ + 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) + {} + } + + /* TIM1, GPIOA and GPIOB clock enable */ + RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1 | RCC_APB2Periph_GPIOA | + RCC_APB2Periph_GPIOB, ENABLE); +} + +/******************************************************************************* +* Function Name : GPIO_Configuration +* Description : Configure the TIM1 Pins. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void GPIO_Configuration(void) +{ + GPIO_InitTypeDef GPIO_InitStructure; + + /* GPIOA Configuration: TIM1 Channel 1, 2 and 3 as alternate function push-pull */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + GPIO_Init(GPIOA, &GPIO_InitStructure); + + /* GPIOB Configuration: TIM1 Channel 1N, 2N and 3N as alternate function push-pull */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15; + GPIO_Init(GPIOB, &GPIO_InitStructure); + + /* GPIOB Configuration: BKIN pin */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; + GPIO_Init(GPIOB, &GPIO_InitStructure); +} + +/******************************************************************************* +* Function Name : NVIC_Configuration +* Description : Configure the nested vectored interrupt controller. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_Configuration(void) +{ +#ifdef VECT_TAB_RAM + /* Set the Vector Table base location at 0x20000000 */ + NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0); +#else /* VECT_TAB_FLASH */ + /* Set the Vector Table base location at 0x08000000 */ + NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0); +#endif +} + +#ifdef DEBUG +/******************************************************************************* +* Function Name : assert_failed +* Description : Reports the name of the source file and the source line number +* where the assert_param error has occurred. +* Input : - file: pointer to the source file name +* - line: assert_param error line source number +* Output : None +* Return : None +*******************************************************************************/ +void assert_failed(u8* file, u32 line) +{ + /* User can add his own implementation to report the file name and line number, + ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ + + while (1) + {} +} +#endif + +/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3