AT32F105如何实现PB13单独发出pwm
如题，小白感谢 gpio_init_type gpio_init_struct;tmr_output_config_type tmr_output_struct;
tmr_brkdt_config_type tmr_brkdt_struct;
gpio_default_para_init(&gpio_init_struct);
/* add user code begin tmr1_init 1 */
/* add user code end tmr1_init 1 */
/* configure the CH1C pin */
gpio_init_struct.gpio_pins = GPIO_PINS_13;
gpio_init_struct.gpio_mode = GPIO_MODE_MUX;
gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
gpio_init_struct.gpio_pull = GPIO_PULL_NONE;
gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_MODERATE;
gpio_init(GPIOB, &gpio_init_struct);
/* configure counter settings */
tmr_cnt_dir_set(TMR1, TMR_COUNT_UP);
tmr_clock_source_div_set(TMR1, TMR_CLOCK_DIV1);
tmr_repetition_counter_set(TMR1, 0);
tmr_period_buffer_enable(TMR1, FALSE);
tmr_base_init(TMR1, 499, 14);
/* configure primary mode settings */
tmr_sub_sync_mode_set(TMR1, FALSE);
tmr_primary_mode_select(TMR1, TMR_PRIMARY_SEL_RESET);
/* configure channel 1 output settings */
tmr_output_struct.oc_mode = TMR_OUTPUT_CONTROL_PWM_MODE_A;
tmr_output_struct.oc_output_state = FALSE;
tmr_output_struct.occ_output_state = TRUE;
tmr_output_struct.oc_polarity = TMR_OUTPUT_ACTIVE_HIGH;
tmr_output_struct.occ_polarity = TMR_OUTPUT_ACTIVE_HIGH;
tmr_output_struct.oc_idle_state = FALSE;
tmr_output_struct.occ_idle_state = FALSE;
tmr_output_channel_config(TMR1, TMR_SELECT_CHANNEL_1, &tmr_output_struct);
tmr_channel_value_set(TMR1, TMR_SELECT_CHANNEL_1, 250);
tmr_output_channel_buffer_enable(TMR1, TMR_SELECT_CHANNEL_1, FALSE);
tmr_output_channel_immediately_set(TMR1, TMR_SELECT_CHANNEL_1, FALSE);
/* configure break and dead-time settings */
tmr_brkdt_struct.brk_enable = FALSE;
tmr_brkdt_struct.auto_output_enable = FALSE;
tmr_brkdt_struct.brk_polarity = TMR_BRK_INPUT_ACTIVE_LOW;
tmr_brkdt_struct.fcsoen_state = FALSE;
tmr_brkdt_struct.fcsodis_state = FALSE;
tmr_brkdt_struct.wp_level = TMR_WP_OFF;
tmr_brkdt_struct.deadtime = 0;
tmr_brkdt_config(TMR1, &tmr_brkdt_struct);
tmr_output_enable(TMR1, FALSE);
tmr_counter_enable(TMR1, TRUE); #include "at32f10x.h"
void pwm_pb13_init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
// 1. 使能 GPIOB 和 TIM1 时钟
RCC_APB2PeriphClockCmd(RCC_APB2PERIPH_GPIOB | RCC_APB2PERIPH_TIM1, ENABLE);
// 2. 配置 PB13 为复用推挽输出（TIM1_CH1N）
GPIO_InitStructure.GPIO_Pin = GPIO_Pins_13;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; // 复用推挽
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
// 3. 初始化 TIM1 基本定时参数（设定 PWM 周期）
TIM_TimeBaseStructure.TIM_Period = 999; // 自动重装值 ARR
TIM_TimeBaseStructure.TIM_Prescaler = 71; // 预分频器 PSC（72MHz / (71+1) = 1MHz）
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
// 4. 配置 PWM 模式，通道1
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Disable; // CH1 不输出
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable; // 启用 CH1N 输出
TIM_OCInitStructure.TIM_Pulse = 500; // 比较值，控制占空比（占空比 = Pulse / (Period+1)）
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
// 5. 启用定时器 PWM 输出
TIM_CtrlPWMOutputs(TIM1, ENABLE); // 高级定时器需要显式开启主输出
TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
TIM_ARRPreloadConfig(TIM1, ENABLE);
// 6. 启动 TIM1
TIM_Cmd(TIM1, ENABLE);
}
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