[bsp/stm32] fix the bug of can filter conflict
@@ -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)
{
+ /* 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;
}
/**
