__asm("jrne EndWaitForVih")编译报错

1万 · 2021-8-14 18:53

编译DISCOVERY的例子，出现如下错误，不知道什么原因?
Error[As011]: Undefined symbol: EndWaitForVih E:\Work\PROCEDURE\ARM\Experiment\STM8\stm8s-discovery_dev\Libraries\STM8_TouchSensing_Driver\src\stm8_tsl_rc_acquisition.c 366
Error[As011]: Undefined symbol: EndWaitForVih E:\Work\PROCEDURE\ARM\Experiment\STM8\stm8s-discovery_dev\Libraries\STM8_TouchSensing_Driver\src\stm8_tsl_rc_acquisition.c 366
Error[As011]: Undefined symbol: EndWaitForVih E:\Work\PROCEDURE\ARM\Experiment\STM8\stm8s-discovery_dev\Libraries\STM8_TouchSensing_Driver\src\stm8_tsl_rc_acquisition.c 366
Error[As011]: Undefined symbol: WaitForVih E:\Work\PROCEDURE\ARM\Experiment\STM8\stm8s-discovery_dev\Libraries\STM8_TouchSensing_Driver\src\stm8_tsl_rc_acquisition.c 369
Error[As011]: Undefined symbol: WaitForVih E:\Work\PROCEDURE\ARM\Experiment\STM8\stm8s-discovery_dev\Libraries\STM8_TouchSensing_Driver\src\stm8_tsl_rc_acquisition.c 369
Error[As011]: Undefined symbol: WaitForVih E:\Work\PROCEDURE\ARM\Experiment\STM8\stm8s-discovery_dev\Libraries\STM8_TouchSensing_Driver\src\stm8_tsl_rc_acquisition.c 369
Error[Og010]: Inline assembler instruction does not have a unique size: " bcp a, (x)" E:\Work\PROCEDURE\ARM\Experiment\STM8\stm8s-discovery_dev\Libraries\STM8_TouchSensing_Driver\src\stm8_tsl_rc_acquisition.c 301
Error[As011]: Undefined symbol: EndWaitForVil E:\Work\PROCEDURE\ARM\Experiment\STM8\stm8s-discovery_dev\Libraries\STM8_TouchSensing_Driver\src\stm8_tsl_rc_acquisition.c 302
Error[As011]: Undefined symbol: EndWaitForVil E:\Work\PROCEDURE\ARM\Experiment\STM8\stm8s-discovery_dev\Libraries\STM8_TouchSensing_Driver\src\stm8_tsl_rc_acquisition.c 302
Error[As011]: Undefined symbol: EndWaitForVil E:\Work\PROCEDURE\ARM\Experiment\STM8\stm8s-discovery_dev\Libraries\STM8_TouchSensing_Driver\src\stm8_tsl_rc_acquisition.c 302
Error[As011]: Undefined symbol: WaitForVil E:\Work\PROCEDURE\ARM\Experiment\STM8\stm8s-discovery_dev\Libraries\STM8_TouchSensing_Driver\src\stm8_tsl_rc_acquisition.c 305

1万 · 2021-8-14 18:55

这么多未定义符号，肯定是头文件没有包含进来。

1万 · 2021-8-14 18:58

好像不是头文件问题，同样的代码在STVD里面可以编译通过的，在IAR下编译有错误，网上有些说IAR是版本问题，感觉汇编下的跳转标识都无法识别，认为没有定义。
__asm("bcp a, (x)");  // 1 cycles
  __asm("jrne EndWaitForVih");
  __asm("ldw y, TIMACQ_CNTR"); // 2 cycles; hw counter also used for timeout ...
  __asm("cpw y, #0x0E00"); // 2 cycles; Timeout compare
  __asm("jrult WaitForVih");
  __asm("EndWaitForVih:");

1万 · 2021-8-14 19:00

应该是库的版本问题

2万 · 2021-8-14 19:02

楼主找到问题解决了吗？

1万 · 2021-8-14 19:06

引用的符号超范围了，要在同一段程序代码范围内，比如这样使用：

__asm(
"WaitForVih: \n"
"bcp a, (x) \n"
"jrne EndWaitForVih \n"
"ldw y, TIMACQ_CNTR \n"
"cpw y, #0x0E00 \n"
"jrult WaitForVih \n"
"EndWaitForVih: \n"
);