标签：GD32F107RC TIMER filter init CAN2 timer TIMER3 parameter 调试
一开始的配置
rcu_periph_clock_enable(RCU_CAN0);
rcu_periph_clock_enable(RCU_CAN1);
rcu_periph_clock_enable(RCU_GPIOB);
rcu_periph_clock_enable(RCU_AF);
/* configure CAN0 GPIO */
gpio_init(GPIOA, GPIO_MODE_IPU, GPIO_OSPEED_50MHZ, GPIO_PIN_11); //CAN0
gpio_init(GPIOA, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_12);
/* configure CAN1 GPIO */
gpio_init(GPIOB,GPIO_MODE_IPU,GPIO_OSPEED_50MHZ,GPIO_PIN_5);
gpio_init(GPIOB,GPIO_MODE_AF_PP,GPIO_OSPEED_50MHZ,GPIO_PIN_6);
gpio_pin_remap_config(GPIO_CAN1_REMAP,ENABLE);
nvic_priority_group_set(NVIC_PRIGROUP_PRE1_SUB3);
/* configure CAN0 NVIC */
nvic_irq_enable(CAN0_RX0_IRQn, 0, 0);
/* configure CAN1 NVIC */
nvic_irq_enable(CAN1_RX0_IRQn,2,0);
can_struct_para_init(CAN_INIT_STRUCT, &can_parameter);
can_struct_para_init(CAN_INIT_STRUCT, &can_filter);
/* initialize CAN register */
can_deinit(CAN0);
can_deinit(CAN1);
/* initialize CAN parameters */
can_parameter.time_triggered = DISABLE;
can_parameter.auto_bus_off_recovery = ENABLE;//DISABLE;允许离线自动恢复
can_parameter.auto_wake_up = DISABLE;
can_parameter.no_auto_retrans = DISABLE;
can_parameter.rec_fifo_overwrite = DISABLE;
can_parameter.trans_fifo_order = DISABLE;
can_parameter.working_mode = CAN_NORMAL_MODE;
can_parameter.resync_jump_width = CAN_BT_SJW_1TQ;
can_parameter.time_segment_1 = CAN_BT_BS1_5TQ;
can_parameter.time_segment_2 = CAN_BT_BS2_3TQ;
/* 1MBps */
#if CAN_BAUDRATE == 1000
can_parameter.prescaler = 6;// 56M/6/(1+3+5)=1M
/* 500KBps */
#elif CAN_BAUDRATE == 500
can_parameter.prescaler = 12;
/* 250KBps */
#elif CAN_BAUDRATE == 250
can_parameter.prescaler = 24;
/* 125KBps */
#elif CAN_BAUDRATE == 125
can_parameter.prescaler = 48;
/* 100KBps */
#elif CAN_BAUDRATE == 100
can_parameter.prescaler = 60;
/* 50KBps */
#elif CAN_BAUDRATE == 50
can_parameter.prescaler = 120;
/* 20KBps */
#elif CAN_BAUDRATE == 20
can_parameter.prescaler = 300;
#else
#error "please select list can baudrate in private defines in main.c "
#endif
/* initialize CAN */
can_init(CAN0, &can_parameter);
can_init(CAN1, &can_parameter);
/* initialize filter */
can_filter.filter_number=0;
can_filter.filter_mode = CAN_FILTERMODE_MASK;
can_filter.filter_bits = CAN_FILTERBITS_32BIT;
can_filter.filter_list_high = 0x3000;
can_filter.filter_list_low = 0x0000;
can_filter.filter_mask_high = 0x3000;
can_filter.filter_mask_low = 0x0000;
can_filter.filter_fifo_number = CAN_FIFO0;
can_filter.filter_enable = ENABLE;
/* CAN1 filter number */ can_filter.filter_number = 14;
can_filter.filter_mode = CAN_FILTERMODE_MASK;
can_filter.filter_bits = CAN_FILTERBITS_32BIT;
can_filter.filter_list_high = 0x0000;
can_filter.filter_list_low = 0x0000;
can_filter.filter_mask_high = 0x0000;
can_filter.filter_mask_low = 0x0000;
can_filter.filter_fifo_number = CAN_FIFO0;//stm32为CAN_FIFO1
can_filter.filter_enable = ENABLE;
can_filter_init(&can_filter);
can_interrupt_enable(CAN0, CAN_INT_RFNE0);//使能CAN中断
can_interrupt_enable(CAN1, CAN_INT_RFNE0);
发现CAN1中断进入不了。
各种折腾都没有。测试硬件，发现CAN_RX和TX的电平都是0，推测是芯片的Can接口没有配置好，但怎么检查都没有发现配置问题。后来在数据手册发现
程序确实在配置CAN后开启的TIM3
void timer3_config(void)
{
/* ----------------------------------------------------------------------------
TIMER1 Configuration:
TIMER1CLK = SystemCoreClock/5400 = 20KHz.
TIMER1 configuration is timing mode, and the timing is 0.2s(4000/20000 = 0.2s).
CH0 update rate = TIMER1 counter clock/CH0CV = 20000/4000 = 5Hz.
---------------------------------------------------------------------------- */
/* ----------------------------------------------------------------------------
TIMER1 Configuration:
TIMER1CLK = SystemCoreClock/135 = 800KHz.
TIMER1 configuration is timing mode, and the timing is 0.1ms(80/8000000 = 0.1ms).
CH0 update rate = TIMER1 counter clock/CH0CV = 800000/80 = 10KHz.
---------------------------------------------------------------------------- */
timer_oc_parameter_struct timer_ocinitpara;
timer_parameter_struct timer_initpara;
rcu_periph_clock_enable(RCU_TIMER3);
timer_deinit(TIMER3);
/* initialize TIMER init parameter struct */
timer_struct_para_init(&timer_initpara);
/* TIMER1 configuration */
timer_initpara.prescaler = 134;//5399;
timer_initpara.alignedmode = TIMER_COUNTER_EDGE;
timer_initpara.counterdirection = TIMER_COUNTER_UP;
timer_initpara.period = 80;//4000;
timer_initpara.clockdivision = TIMER_CKDIV_DIV1;
timer_init(TIMER3, &timer_initpara);
/* initialize TIMER channel output parameter struct */
timer_channel_output_struct_para_init(&timer_ocinitpara);
/* CH0,CH1 and CH2 configuration in OC timing mode */
timer_ocinitpara.outputstate = TIMER_CCX_ENABLE;
timer_ocinitpara.ocpolarity = TIMER_OC_POLARITY_HIGH;
timer_ocinitpara.ocidlestate = TIMER_OC_IDLE_STATE_LOW;
timer_channel_output_config(TIMER3, TIMER_CH_0, &timer_ocinitpara);
/* CH0 configuration in OC timing mode */
timer_channel_output_pulse_value_config(TIMER3, TIMER_CH_0, 40);//2000);
timer_channel_output_mode_config(TIMER3, TIMER_CH_0, TIMER_OC_MODE_TIMING);
timer_channel_output_shadow_config(TIMER3, TIMER_CH_0, TIMER_OC_SHADOW_DISABLE);
timer_interrupt_enable(TIMER3, TIMER_INT_CH0);
timer_enable(TIMER3);
}
View Code
改成
void timer3_config(void)
{
/* ----------------------------------------------------------------------------
TIMER1 Configuration:
TIMER1CLK = SystemCoreClock/5400 = 20KHz.
TIMER1 configuration is timing mode, and the timing is 0.2s(4000/20000 = 0.2s).
CH0 update rate = TIMER1 counter clock/CH0CV = 20000/4000 = 5Hz.
---------------------------------------------------------------------------- */
/* ----------------------------------------------------------------------------
TIMER1 Configuration:
TIMER1CLK = SystemCoreClock/135 = 800KHz.
TIMER1 configuration is timing mode, and the timing is 0.1ms(80/8000000 = 0.1ms).
CH0 update rate = TIMER1 counter clock/CH0CV = 800000/80 = 10KHz.
---------------------------------------------------------------------------- */
timer_oc_parameter_struct timer_ocinitpara;
timer_parameter_struct timer_initpara;
rcu_periph_clock_enable(RCU_TIMER3);
timer_deinit(TIMER3);
/* initialize TIMER init parameter struct */
timer_struct_para_init(&timer_initpara);
/* TIMER1 configuration */
timer_initpara.prescaler = 134;//5399;
timer_initpara.alignedmode = TIMER_COUNTER_EDGE;
timer_initpara.counterdirection = TIMER_COUNTER_UP;
timer_initpara.period = 80;//4000;
timer_initpara.clockdivision = TIMER_CKDIV_DIV1;
timer_init(TIMER3, &timer_initpara);
/* initialize TIMER channel output parameter struct */
timer_channel_output_struct_para_init(&timer_ocinitpara);
// /* CH0,CH1 and CH2 configuration in OC timing mode */
// timer_ocinitpara.outputstate = TIMER_CCX_ENABLE;
// timer_ocinitpara.ocpolarity = TIMER_OC_POLARITY_HIGH;
// timer_ocinitpara.ocidlestate = TIMER_OC_IDLE_STATE_LOW;
// timer_channel_output_config(TIMER3, TIMER_CH_0, &timer_ocinitpara);
// /* CH0 configuration in OC timing mode */
// timer_channel_output_pulse_value_config(TIMER3, TIMER_CH_0, 40);//2000);
// timer_channel_output_mode_config(TIMER3, TIMER_CH_0, TIMER_OC_MODE_TIMING);
// timer_channel_output_shadow_config(TIMER3, TIMER_CH_0, TIMER_OC_SHADOW_DISABLE);
timer_interrupt_enable(TIMER3, TIMER_INT_CH0);
timer_enable(TIMER3);
}
View Code
CAN2中断就可以了！原来，开启TIM3的ch1输出PWM，竟然导致CAN2的remap失效了！！
标签：GD32F107RC,TIMER,filter,init,CAN2,timer,TIMER3,parameter,调试 来源： https://www.cnblogs.com/heywei/p/15960984.html
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