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[bsp/stm32] fix the bug of can filter conflict

This commit is contained in:
zuozuojia 2022-01-07 22:35:58 +08:00 committed by guo
parent 8af8decb62
commit ff36a39d32
1 changed files with 16 additions and 1 deletions
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17
bsp/stm32/libraries/HAL_Drivers/drv_can.c
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@ -335,10 +335,25 @@ static rt_err_t _can_control(struct rt_can_device *can, int cmd, void *arg)
{
if (filter_cfg->items[i].hdr == -1)
{
drv_can->FilterConfig.FilterBank = i;
/* use default filter bank settings */
/**
* because can1 and can2 use the same filter groups,
* separate the groups of can1 and can2, to prevent being covered.
*/
if (drv_can->name == "can1")
{
/* can1 banks 0~13 */
drv_can->FilterConfig.FilterBank = i;
}
else if (drv_can->name == "can2")
{
/* can1 banks 14~27 */
drv_can->FilterConfig.FilterBank = i + 14;
}
}
else
{
/* use user-defined filter bank settings */
drv_can->FilterConfig.FilterBank = filter_cfg->items[i].hdr;
}
/**