CH_GRP_MAX
if (i2s_data[i] > CH_GRP_MAX - 1) {
i, i2s_data[i], CH_GRP_MAX);
} else if (num != CH_GRP_MAX) {
"The num: %d should be: %d\n", num, CH_GRP_MAX);
unsigned int i2s_sdis[CH_GRP_MAX];
unsigned int i2s_sdos[CH_GRP_MAX];