andreika-git
/
ChibiOS
mirror of https://github.com/andreika-git/ChibiOS.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Fixed an STM32 GPT driver problem. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@3353 35acf78f-673a-0410-8e92-d51de3d6d3f4
This commit is contained in:
gdisirio 2011-09-19 14:01:42 +00:00
parent 31a099cb10
commit f5c7e2f7cd
2 changed files with 5 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
os/hal/platforms/STM32/gpt_lld.c
View File

@ -401,6 +401,10 @@ void gpt_lld_start_timer(GPTDriver *gptp, gptcnt_t interval) {
gptp->tim->ARR = interval - 1; /* Time constant. */
gptp->tim->EGR = TIM_EGR_UG; /* Update event. */
gptp->tim->CNT = 0; /* Reset counter. */
/* NOTE: After generating the UG event it takes several clock cycles before
SR bit 0 goes to 1. This is because the clearing of CNT has been inserted
before the clearing of SR, to give it some time.*/
gptp->tim->SR = 0; /* Clear pending IRQs (if any). */
gptp->tim->DIER = TIM_DIER_UIE; /* Update Event IRQ enabled. */
gptp->tim->CR1 = TIM_CR1_URS | TIM_CR1_CEN;

2
testhal/STM32L1xx/GPT/main.c
View File

@ -29,7 +29,7 @@ static void gpt2cb(GPTDriver *gptp) {
(void)gptp;
palSetPad(GPIOB, GPIOB_LED4);
chSysLockFromIsr();
gptStartOneShotI(&GPTD3, 200); /* 0.02 second pulse.*/
gptStartOneShotI(&GPTD3, 1000); /* 0.02 second pulse.*/
chSysUnlockFromIsr();
}