问答21ic问答首页 - GD32F30X timer8 timer 11初始化问题
GD32F30X timer8 timer 11初始化问题
有哪位大佬知道，GD32F30X的 系统库函数timer_init()里没有对TIMER8/TIMER11的处理， 是什么原因？void timer_init(uint32_t timer_periph, timer_parameter_struct* initpara){
/* configure the counter prescaler value */
TIMER_PSC(timer_periph) = (uint16_t)initpara->prescaler;
/* configure the counter direction and aligned mode */
if((TIMER0 == timer_periph) || (TIMER1 == timer_periph) || (TIMER2 == timer_periph)
|| (TIMER3 == timer_periph) || (TIMER4 == timer_periph) || (TIMER7 == timer_periph)){
TIMER_CTL0(timer_periph) &= ~(uint32_t)(TIMER_CTL0_DIR|TIMER_CTL0_CAM);
TIMER_CTL0(timer_periph) |= (uint32_t)initpara->alignedmode;
TIMER_CTL0(timer_periph) |= (uint32_t)initpara->counterdirection;
}
/* configure the autoreload value */
TIMER_CAR(timer_periph) = (uint32_t)initpara->period;
if((TIMER5 != timer_periph) && (TIMER6 != timer_periph)){
/* reset the CKDIV bit */
TIMER_CTL0(timer_periph) &= ~(uint32_t)TIMER_CTL0_CKDIV;
TIMER_CTL0(timer_periph) |= (uint32_t)initpara->clockdivision;
}
if((TIMER0 == timer_periph) || (TIMER7 == timer_periph)){
/* configure the repetition counter value */
TIMER_CREP(timer_periph) = (uint32_t)initpara->repetitioncounter;
}
/* generate an update event */
TIMER_SWEVG(timer_periph) |= (uint32_t)TIMER_SWEVG_UPG;
}
/* configure the counter prescaler value */
TIMER_PSC(timer_periph) = (uint16_t)initpara->prescaler;
/* configure the counter direction and aligned mode */
if((TIMER0 == timer_periph) || (TIMER1 == timer_periph) || (TIMER2 == timer_periph)
|| (TIMER3 == timer_periph) || (TIMER4 == timer_periph) || (TIMER7 == timer_periph)){
TIMER_CTL0(timer_periph) &= ~(uint32_t)(TIMER_CTL0_DIR|TIMER_CTL0_CAM);
TIMER_CTL0(timer_periph) |= (uint32_t)initpara->alignedmode;
TIMER_CTL0(timer_periph) |= (uint32_t)initpara->counterdirection;
}
/* configure the autoreload value */
TIMER_CAR(timer_periph) = (uint32_t)initpara->period;
if((TIMER5 != timer_periph) && (TIMER6 != timer_periph)){
/* reset the CKDIV bit */
TIMER_CTL0(timer_periph) &= ~(uint32_t)TIMER_CTL0_CKDIV;
TIMER_CTL0(timer_periph) |= (uint32_t)initpara->clockdivision;
}
if((TIMER0 == timer_periph) || (TIMER7 == timer_periph)){
/* configure the repetition counter value */
TIMER_CREP(timer_periph) = (uint32_t)initpara->repetitioncounter;
}
/* generate an update event */
TIMER_SWEVG(timer_periph) |= (uint32_t)TIMER_SWEVG_UPG;
}
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评论
2025-08-01
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42131688c0e4fa6d01.png (77.83 KB )
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2025-8-1 08:46 上传
一般来说，固件库代码应该是通用设计，你要多看下芯片数据手册关于寄存器信息，了解一下为什么有些不配置，是因为没有这些位；
高级定时器和通用定时器是有区别的；
不过如果还有疑问，你也可以咨询一下技术支持。
评论
2025-08-01
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评论
2025-07-31
是的， 建议厂家的工程师把库函数写完整些。
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你是根据timer_init如何判断出没有对TIMER8/TIMER11进行处理的呢？我的看法是函数里面的各种if应该是针对有些定时器做特殊处理吧。
24869688b32acb9600.png (143.14 KB )
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2025-7-31 17:09 上传
比如TIMER1~TIMER4的控制寄存器0，有CAM位和DIR位，但TIMER8和TIMER11的控制寄存器0没有这些位，所以就根据定时器的实际情况来判断是否操作下面的代码：
48716688b34d774be7.png (73.82 KB )
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2025-7-31 17:18 上传
82598688b34e7d64da.png (90.96 KB )
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2025-7-31 17:18 上传
49513688b34f076342.png (96.25 KB )
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2025-7-31 17:18 上传
现在理解了吧。
评论
2025-07-31
@lmksz ：兄弟，要认真看代码和多看数据手册。
也注意到初始化化函数内对定时器号的判断， 但timer 8/11初始化就只执行下面两条指令？ /* configure the autoreload value */ TIMER_CAR(timer_periph) = (uint32_t)initpara->period; /* generate an update event */ TIMER_SWEVG(timer_periph) |= (uint32_t)TIMER_SWEVG_UPG;
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评论
2025-07-31
其它定时器被用了， 只能用这两个......, 才遇到了这个问题
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2025-07-31
还是希望厂家能把芯片内部硬件有的功能都在库函数里做好。
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评论
2025-07-31
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评论
2025-07-31
用的是有Timer8/11的型号GD32F303ZGT6
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