sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Merged in AVyhovanec/nuttx (pull request #295)

Browse Source 
The interrupt occurs over the counter overflow

Approved-by: Gregory Nutt <gnutt@nuttx.org>
This commit is contained in:
Aleksandr Vyhovanec 2017-03-24 11:24:45 +00:00 committed by Gregory Nutt
commit 809588b254
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/arm/src/stm32/stm32_qencoder.c
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);
/* 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);
if ((regval & ATIM_CR1_DIR) != 0)
{
priv->position -= (int32_t)0x0000ffff;
priv->position -= (int32_t)0x00010000;
}
else
{
priv->position += (int32_t)0x0000ffff;
priv->position += (int32_t)0x00010000;
}
return OK;