correct micro ticks

hathach · hathach · commit 9a960037bb56 · 2020-08-20T23:15:40.000+07:00
diff --git a/cores/nRF5/freertos/portable/CMSIS/nrf52/port_cmsis_systick.c b/cores/nRF5/freertos/portable/CMSIS/nrf52/port_cmsis_systick.c
@@ -243,7 +243,7 @@ void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime )
                 // If dwt cycle count is enable, adjust it as welll
                 if ( (CoreDebug->DEMCR & CoreDebug_DEMCR_TRCENA_Msk) && (DWT->CTRL & DWT_CTRL_CYCCNTENA_Msk) )
                 {
-                  DWT->CYCCNT += ((diff * 1000000) / configTICK_RATE_HZ) * 64;
+                  DWT->CYCCNT += (((diff-1) * 1000000) / configTICK_RATE_HZ) * 64;
                 }
               
                 switch_req = xTaskIncrementTick();

Original file line number	Diff line number	Diff line change
`@@ -243,7 +243,7 @@ void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime )`
`243`	`243`	`// If dwt cycle count is enable, adjust it as welll`
`244`	`244`	`if ( (CoreDebug->DEMCR & CoreDebug_DEMCR_TRCENA_Msk) && (DWT->CTRL & DWT_CTRL_CYCCNTENA_Msk) )`
`245`	`245`	`{`
`246`		`- DWT->CYCCNT += ((diff * 1000000) / configTICK_RATE_HZ) * 64;`
	`246`	`+ DWT->CYCCNT += (((diff-1) * 1000000) / configTICK_RATE_HZ) * 64;`
`247`	`247`	`}`
`248`	`248`
`249`	`249`	`switch_req = xTaskIncrementTick();`