STM8S003F3 UART IRQ冻结了mcu

tify;text-indent: 40px;">大家好

一直在玩那个mcu但是我不能将UART IRQ DR（数据寄存器）设置为空
IO引脚中断按预期工作但在CR2函数中设置TIEN后，enableInterrupts（）会冻结整个芯片并且ISR永远不会被触发它只是挂在该函数上

我的代码：

ISR（UART1_T_TXE_vector）
{

PD_ODR ^ = 1 以下为原文

hello everyone

been playing with that mcu for a while but I cant set up UART IRQ DR(data register) empty
IO pins interrupts work as expected but after setting TIEN in CR2 function enableInterrupts() freezes whole chip and ISR is never hit it just hangs on that function

my code:

ISR(UART1_T_TXE_vector)
{
  PD_ODR ^= 1<<3;
}

int main( void )
{
  UART1_CR1_.M = 1;//9 bit data inc parity bit
  UART1_CR3 |= 0x20;//2 stop bits
UART1_BRR2 = (u8)0x02;//baud setting 9600 at 16MHz
  UART1_BRR1 = (u8)0x68;
UART1_CR1_.PCEN = 1;//parity check enable
UART1_CR1_.PS = 0;//even parity
  UART1_CR2_.TEN = 1;//TX enable
  //UART1_CR2_.TIEN = 1;//DR empty IRQ enable
  UART1_CR2_.REN = 1;//RX enable

  enableInterrupts();
  u8 x = 0;
  u8 buf[10] = { 65,66,67,68,69,70,71,72,73,74 };
  while (x<10)
  {
  UART1_DR = buf[x];
  while (UART1_SR_.TXE == 0);
  x++;
  }

anyone have an idea whats wrong? does it require some additional settings?

问答对人有帮助，内容完整，我也想知道答案 0 tify;text-indent: 40px;">大家好一直在玩那个mcu但是我不能将UART IRQ DR（数据寄存器）设置为空 IO引脚中断按预期工作但在CR2函数中设置TIEN后，enableInterrupts（）会冻结整个芯片并且ISR永远不会被触发它只是挂在该函数上我的代码： ISR（UART1_T_TXE_vector） { PD_ODR ^ = 1 以下为原文 hello everyone been playing with that mcu for a while but I cant set up UART IRQ DR(data register) empty IO pins interrupts work as expected but after setting TIEN in CR2 function enableInterrupts() freezes whole chip and ISR is never hit it just hangs on that function my code: ISR(UART1_T_TXE_vector) { PD_ODR ^= 1<<3; } int main( void ) { UART1_CR1_.M = 1;//9 bit data inc parity bit UART1_CR3 \|= 0x20;//2 stop bits UART1_BRR2 = (u8)0x02;//baud setting 9600 at 16MHz UART1_BRR1 = (u8)0x68; UART1_CR1_.PCEN = 1;//parity check enable UART1_CR1_.PS = 0;//even parity UART1_CR2_.TEN = 1;//TX enable //UART1_CR2_.TIEN = 1;//DR empty IRQ enable UART1_CR2_.REN = 1;//RX enable enableInterrupts(); u8 x = 0; u8 buf[10] = { 65,66,67,68,69,70,71,72,73,74 }; while (x<10) { UART1_DR = buf[x]; while (UART1_SR_.TXE == 0); x++; } anyone have an idea whats wrong? does it require some additional settings? 0
2018-11-26 10:24:25　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × wang21cj 该类别下有 44 个回答。邀请回答新星之火12138 该类别下有 41 个回答。邀请回答 chm5 该类别下有 39 个回答。邀请回答 hgimtk 该类别下有 33 个回答。邀请回答 HengDu 该类别下有 30 个回答。邀请回答 hwp0415229 该类别下有 28 个回答。邀请回答 jghgfdssas 该类别下有 28 个回答。邀请回答颜刚YanG 该类别下有 26 个回答。邀请回答可口可甜该类别下有 26 个回答。邀请回答 kingnet6688 该类别下有 26 个回答。邀请回答 kingnet9999 该类别下有 25 个回答。邀请回答 jenny042 该类别下有 25 个回答。邀请回答 andyfly7 该类别下有 25 个回答。邀请回答麻酱该类别下有 25 个回答。邀请回答 zyh34997 该类别下有 25 个回答。邀请回答柱子图宁该类别下有 25 个回答。邀请回答云汉007 该类别下有 24 个回答。邀请回答 ggfvxv 该类别下有 24 个回答。邀请回答 heks 该类别下有 24 个回答。邀请回答 iyfhnvbn 该类别下有 24 个回答。邀请回答举报全娟相关推荐 • 是否存在部件号stm8s003f2？ 1434 • STM8S003F3如何使用ADC？ 817 • stm8s003f3没有回答 2672 • 在UART RS485传输中，HTERM中始终缺少最后一个字节（STM8S003F3） 4699 • 求助，关于STM8S003F3 ADC scan mode的问题求解 179 • 如何开始学习stm8S003f3？ 5536 • 使用STM8S003F3选择什么调试器？ 3501 • STM8S STM8S003F3 MCU的2个定时器TIMER1 CHANNEL2和TIMER2 CHANNEL1不起作用 3150 • 怎么读取STM8S003F3上的电池电压 3611 • STM8S003F3能否输出2路可调的相位相差180度的独立PWM波形？ 180 1个回答

答案对人有帮助，有参考价值 0 你好。你现在可能已经解决了你的问题，但对于其他任何人来说：您需要添加到中断处理程序例程。您需要复位发出中断信号的位。请参阅参考手册。在UART状态寄存器中，有些位在特定中断时变为高电平。弄清楚哪一位变高了。处理那种情况。然后重置该位。例如，如果由于可以读取数据而发生中断，则读取数据然后重置RXNE位。全部在中断处理程序内。以上来自于谷歌翻译以下为原文 Hello. You probably solved your issue by now, but for anyone else who comes along: You need to add to interrupt handler routine. You need to reset the bit that signals an interrupt has occurred. Refer to the reference manual. In the UART Status register there are bits which go high for particular interrupts. Figure out which bit went high. Handle that situation. Then reset that bit. For example, if the interrupt occurred because data is available to be read then you read the data and then reset the RXNE bit. All inside the interrupt handler.

2018-11-26 10:43:28 评论举报宋燕

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