PWM编码器计数溢出中断怎么用？
PWM用于增量编码器正反转计数，计数最大65536，计数溢出时可以设置中断吗？在中断中可以判断是向上，还是向下溢出？百度查的都是stm的资料，我们stc的资料好少 在中断使能寄存器PWMx_IER的bit0设置允许更新中断。状态寄存器PWMx_SR1的bit0位中断标志，响应中断时由软件清0。 梁工 发表于 2024-7-3 14:14
在中断使能寄存器PWMx_IER的bit0设置允许更新中断。
状态寄存器PWMx_SR1的bit0位中断标志，响 ...
/* interrupt vector */
#define INT0_VECTOR 0
#define TIMER0_VECTOR 1
#define INT1_VECTOR 2
#define TIMER1_VECTOR 3
#define UART1_VECTOR 4
#define ADC_VECTOR 5
#define LVD_VECTOR 6
#define PCA_VECTOR 7
#define UART2_VECTOR 8
#define SPI_VECTOR 9
#define INT2_VECTOR 10
#define INT3_VECTOR 11
#define TIMER2_VECTOR 12
#define INT4_VECTOR 16
#define UART3_VECTOR 17
#define UART4_VECTOR 18
#define TIMER3_VECTOR 19
#define TIMER4_VECTOR 20
#define CMP_VECTOR 21
#define I2C_VECTOR 24
#define USB_VECTOR 25
#define PWMA_VECTOR 26 /* ¸ß¼¶PWMA */
#define PWMB_VECTOR 27 /* ¸ß¼¶PWMB */
#define TKSU_VECTOR 35 /* ´¥Ãþ°´¼üÖÐ¶Ï */
#define RTC_VECTOR 36 /* RTCÖÐ¶Ï */
#define P0INT_VECTOR 37 /* P0.0~P0.7ÖÐ¶Ï */
#define P1INT_VECTOR 38 /* P1.0~P1.7ÖÐ¶Ï */
#define P2INT_VECTOR 39 /* P2.0~P2.7ÖÐ¶Ï */
#define P3INT_VECTOR 40 /* P3.0~P3.7ÖÐ¶Ï */
#define P4INT_VECTOR 41 /* P4.0~P4.7ÖÐ¶Ï */
#define P5INT_VECTOR 42 /* P5.0~P5.4ÖÐ¶Ï */
#define P6INT_VECTOR 43 /* P6.0~P6.7ÖÐ¶Ï */
#define P7INT_VECTOR 44 /* P7.0~P7.7ÖÐ¶Ï */
中断处理时应该用那个中断号 yangtao123 发表于 2024-7-3 14:19
/* interrupt vector */
#define INT0_VECTOR 0
#define TIMER0_VECTOR 1
PWMA_VECTOR或 PWMB_VECTOR 梁工 发表于 2024-7-3 14:14
在中断使能寄存器PWMx_IER的bit0设置允许更新中断。
状态寄存器PWMx_SR1的bit0位中断标志，响 ...
If interrupts are enabled, the common 0xFFFF -> 0x0000 interrupt can be expected.
- but Quad can count both ways, so what happens on 0x000 -> 0xFFFF case ?
A rough extension is possible by checking timer HIGH byte, but that has a flaw if the counter overflows, and then immediately another pulse in the other direction reverses all bits, the correct action is no overflow at all, but the sticky interrupt flag says 'do 65k overflow' action.
To work properly, this needs two overflow flags, one for each direction.
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