/************高級定時器TIM參數定義，只限TIM1和TIM8************/
// 當使用不同的定時器的時候，對應的GPIO是不一樣的，這點要注意
// 這里我們使用高級控制定時器TIM1
#define ADVANCE_TIM TIM1
#define ADVANCE_TIM_APBxClock_FUN RCC_APB2PeriphClockCmd
#define ADVANCE_TIM_CLK RCC_APB2Periph_TIM1
// PWM 信號的頻率 F = TIM_CLK/{(ARR+1)*(PSC+1)}
#define ADVANCE_TIM_PERIOD (8-1)
#define ADVANCE_TIM_PSC (9-1)
#define ADVANCE_TIM_PULSE 6
#define ADVANCE_TIM_IRQ TIM1_UP_IRQn
#define ADVANCE_TIM_IRQHandler TIM1_UP_IRQHandler
// TIM1 輸出比較通道
#define ADVANCE_TIM_CH1_GPIO_CLK RCC_APB2Periph_GPIOA
#define ADVANCE_TIM_CH1_PORT GPIOA
#define ADVANCE_TIM_CH1_PIN GPIO_Pin_8
// TIM1 輸出比較通道的互補通道
#define ADVANCE_TIM_CH1N_GPIO_CLK RCC_APB2Periph_GPIOB
#define ADVANCE_TIM_CH1N_PORT GPIOB
#define ADVANCE_TIM_CH1N_PIN GPIO_Pin_13
// TIM1 輸出比較通道的剎車通道
#define ADVANCE_TIM_BKIN_GPIO_CLK RCC_APB2Periph_GPIOB
#define ADVANCE_TIM_BKIN_PORT GPIOB
#define ADVANCE_TIM_BKIN_PIN GPIO_Pin_12
static void ADVANCE_TIM_GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
// 輸出比較通道 GPIO 初始化
RCC_APB2PeriphClockCmd(ADVANCE_TIM_CH1_GPIO_CLK, ENABLE);
GPIO_InitStructure.GPIO_Pin = ADVANCE_TIM_CH1_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(ADVANCE_TIM_CH1_PORT, &GPIO_InitStructure);
// 輸出比較通道互補通道 GPIO 初始化
RCC_APB2PeriphClockCmd(ADVANCE_TIM_CH1N_GPIO_CLK, ENABLE);
GPIO_InitStructure.GPIO_Pin = ADVANCE_TIM_CH1N_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(ADVANCE_TIM_CH1N_PORT, &GPIO_InitStructure);
// 輸出比較通道剎車通道 GPIO 初始化
RCC_APB2PeriphClockCmd(ADVANCE_TIM_BKIN_GPIO_CLK, ENABLE);
GPIO_InitStructure.GPIO_Pin = ADVANCE_TIM_BKIN_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(ADVANCE_TIM_BKIN_PORT, &GPIO_InitStructure);
// BKIN引腳默認先輸出低電平
GPIO_ResetBits(ADVANCE_TIM_BKIN_PORT,ADVANCE_TIM_BKIN_PIN);
}
///*
// * 注意：TIM_TimeBaseInitTypeDef結構體里面有5個成員，TIM6和TIM7的寄存器里面只有
// * TIM_Prescaler和TIM_Period，所以使用TIM6和TIM7的時候只需初始化這兩個成員即可，
// * 另外三個成員是通用定時器和高級定時器才有.
// *-----------------------------------------------------------------------------
// *typedef struct
// *{ TIM_Prescaler 都有
// * TIM_CounterMode TIMx,x[6,7]沒有，其他都有
// * TIM_Period 都有
// * TIM_ClockDivision TIMx,x[6,7]沒有，其他都有
// * TIM_RepetitionCounter TIMx,x[1,8,15,16,17]才有
// *}TIM_TimeBaseInitTypeDef;
// *-----------------------------------------------------------------------------
// */
/* ---------------- PWM信號 周期和占空比的計算--------------- */
// ARR ：自動重裝載寄存器的值
// CLK_cnt：計數器的時鐘，等于 Fck_int / (psc+1) = 72M/(psc+1)
// PWM 信號的周期 T = (ARR+1) * (1/CLK_cnt) = (ARR+1)*(PSC+1) / 72M
// 占空比P=CCR/(ARR+1)
static void ADVANCE_TIM_Mode_Config(void)
{
// 開啟定時器時鐘,即內部時鐘CK_INT=72M
ADVANCE_TIM_APBxClock_FUN(ADVANCE_TIM_CLK,ENABLE);
/*--------------------時基結構體初始化-------------------------*/
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
// 自動重裝載寄存器的值，累計TIM_Period+1個頻率后產生一個更新或者中斷
TIM_TimeBaseStructure.TIM_Period=ADVANCE_TIM_PERIOD;
// 驅動CNT計數器的時鐘 = Fck_int/(psc+1)
TIM_TimeBaseStructure.TIM_Prescaler= ADVANCE_TIM_PSC;
// 時鐘分頻因子 ，配置死區(qū)時間時需要用到
TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;
// 計數器計數模式，設置為向上計數
TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;
// 重復計數器的值，沒用到不用管
TIM_TimeBaseStructure.TIM_RepetitionCounter=0;
// 初始化定時器
TIM_TimeBaseInit(ADVANCE_TIM, &TIM_TimeBaseStructure);
/*--------------------輸出比較結構體初始化-------------------*/
TIM_OCInitTypeDef TIM_OCInitStructure;
// 配置為PWM模式1
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
// 輸出使能
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
// 互補輸出使能
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
// 設置占空比大小
TIM_OCInitStructure.TIM_Pulse = ADVANCE_TIM_PULSE;
// 輸出通道電平極性配置
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
// 互補輸出通道電平極性配置
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
// 輸出通道空閑電平極性配置
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
// 互補輸出通道空閑電平極性配置
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;
TIM_OC1Init(ADVANCE_TIM, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(ADVANCE_TIM, TIM_OCPreload_Enable);
/*-------------------剎車和死區(qū)結構體初始化-------------------*/
// 有關剎車和死區(qū)結構體的成員具體可參考BDTR寄存器的描述
TIM_BDTRInitTypeDef TIM_BDTRInitStructure;
TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;
TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;
TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_1;
// 輸出比較信號死區(qū)時間配置，具體如何計算可參考 BDTR:UTG[7:0]的描述
// 這里配置的死區(qū)時間為152ns
TIM_BDTRInitStructure.TIM_DeadTime = 11;
TIM_BDTRInitStructure.TIM_Break = TIM_Break_Enable;
// 當BKIN引腳檢測到高電平的時候，輸出比較信號被禁止，就好像是剎車一樣
TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High;
TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;
TIM_BDTRConfig(ADVANCE_TIM, &TIM_BDTRInitStructure);
// 使能計數器
TIM_Cmd(ADVANCE_TIM, ENABLE);
// 主輸出使能，當使用的是通用定時器時，這句不需要
TIM_CtrlPWMOutputs(ADVANCE_TIM, ENABLE);
}
void ADVANCE_TIM_Init(void)
{
ADVANCE_TIM_GPIO_Config();
ADVANCE_TIM_Mode_Config();
}
/*********************************************END OF FILE**********************/
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