Mirrors_Framework/nuttx
1
0
Fork 0
mirror of https://github.com/apache/nuttx.git synced 2026-05-29 04:19:37 +08:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

The interrupt occurs over the counter overflow

Browse Source
This commit is contained in:
Aleksandr Vyhovanec
2017-03-23 17:34:45 +03:00
parent 528b938958
commit 06af125e45
1 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/arm/src/stm32/stm32_qencoder.c
+3 -3
View File
@@ -693,17 +693,17 @@ static int stm32_interrupt(int irq, FAR void *context, FAR void *arg)
stm32_putreg16(priv, STM32_GTIM_SR_OFFSET, regval & ~GTIM_SR_UIF); stm32_putreg16(priv, STM32_GTIM_SR_OFFSET, regval & ~GTIM_SR_UIF);
/* Check the direction bit in the CR1 register and add or subtract the /* Check the direction bit in the CR1 register and add or subtract the
* maximum value, as appropriate. * maximum value + 1, as appropriate.
*/ */
regval = stm32_getreg16(priv, STM32_GTIM_CR1_OFFSET); regval = stm32_getreg16(priv, STM32_GTIM_CR1_OFFSET);
if ((regval & ATIM_CR1_DIR) != 0) if ((regval & ATIM_CR1_DIR) != 0)
{ {
priv->position -= (int32_t)0x0000ffff; priv->position -= (int32_t)0x00010000;
} }
else else
{ {
priv->position += (int32_t)0x0000ffff; priv->position += (int32_t)0x00010000;
} }
return OK; return OK;