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i2s_tdm: add check for slot mask

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laokaiyao 2023-04-27 12:25:56 +08:00
parent 82159fa135
commit bebcaad35f
1 changed files with 1 additions and 0 deletions
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components/driver/i2s/i2s_tdm.c
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@ -93,6 +93,7 @@ static esp_err_t i2s_tdm_set_clock(i2s_chan_handle_t handle, const i2s_tdm_clk_c
static esp_err_t i2s_tdm_set_slot(i2s_chan_handle_t handle, const i2s_tdm_slot_config_t *slot_cfg) static esp_err_t i2s_tdm_set_slot(i2s_chan_handle_t handle, const i2s_tdm_slot_config_t *slot_cfg)
{ {
ESP_RETURN_ON_FALSE(slot_cfg->slot_mask, ESP_ERR_INVALID_ARG, TAG, "At least one channel should be enabled");
/* Update the total slot num and active slot num */ /* Update the total slot num and active slot num */
handle->active_slot = slot_cfg->slot_mode == I2S_SLOT_MODE_MONO ? 1 : __builtin_popcount(slot_cfg->slot_mask); handle->active_slot = slot_cfg->slot_mode == I2S_SLOT_MODE_MONO ? 1 : __builtin_popcount(slot_cfg->slot_mask);
uint32_t max_slot_num = 32 - __builtin_clz(slot_cfg->slot_mask); uint32_t max_slot_num = 32 - __builtin_clz(slot_cfg->slot_mask);