Fixed behavior of the PRCR register. Previous write protection will be recovered.

2022-07-28 13:01:36 +02:00
parent 42decf28f1
commit 5c7876d444
4 changed files with 6 additions and 4 deletions
--- a/examples/device/hid_composite_freertos/src/freertos_hook.c
+++ b/examples/device/hid_composite_freertos/src/freertos_hook.c
@@ -99,9 +99,10 @@ void vApplicationGetTimerTaskMemory( StaticTask_t **ppxTimerTaskTCBBuffer, Stack
 void vApplicationSetupTimerInterrupt(void)
 {
  /* Enable CMT0 */
+  unsigned short oldPRCR = SYSTEM.PRCR.WORD;
  SYSTEM.PRCR.WORD = (0xA5u<<8) | TU_BIT(1);
  MSTP(CMT0)       = 0;
-  SYSTEM.PRCR.WORD = (0xA5u<<8);
+  SYSTEM.PRCR.WORD = oldPRCR;

  CMT0.CMCNT      = 0;
  CMT0.CMCOR      = (unsigned short)(((configPERIPHERAL_CLOCK_HZ/configTICK_RATE_HZ)-1)/128);