hi. i,d like to change audio serial bus from SAI1(SDK default) to SAI2.
i am using mimxrt106f controller.
this is what i have done:
1- change board pin config as below:
void BOARD_InitAudio(void) {
CLOCK_EnableClock(kCLOCK_Iomuxc); /* iomuxc clock (iomuxc_clk_enable): 0x03U */
IOMUXC_SetPinMux(
IOMUXC_GPIO_AD_B0_09_SAI2_TX_DATA,
0U);
IOMUXC_SetPinMux(
IOMUXC_GPIO_AD_B0_05_SAI2_TX_BCLK,
0U);
IOMUXC_SetPinMux(
IOMUXC_GPIO_AD_B0_04_SAI2_TX_SYNC,
0U);
IOMUXC_SetPinConfig(
IOMUXC_GPIO_AD_B0_09_SAI2_TX_DATA,
0xF0B0U);
}
2- change clock setting to sai2 as :
/*Clock setting for SAI2*/
CLOCK_SetMux(kCLOCK_Sai2Mux, BOARD_AMP_SAI_CLOCK_SOURCE_SELECT);
CLOCK_SetDiv(kCLOCK_Sai2PreDiv, BOARD_AMP_SAI_CLOCK_SOURCE_PRE_DIVIDER);
CLOCK_SetDiv(kCLOCK_Sai2Div, BOARD_AMP_SAI_CLOCK_SOURCE_DIVIDER);
3- change SAI definition on Board.h to SAI2:
#define BOARD_AMP_SAI SAI2
4- change interrupt definitions on Board.h:
#define BOARD_AMP_SAI_IRQ SAI2_IRQn
#define BOARD_AMP_SAI_IRQ_Handler SAI2_IRQHandler
and
#define BOARD_AMP_SAI_EDMA_TX_REQ kDmaRequestMuxSai2Tx
#define BOARD_AMP_SAI_EDMA_RX_REQ kDmaRequestMuxSai2Rx
is there anything else to do to change audio bus from SAI1 to SAI2?
my modifications run. but wait at:
xEventGroupWaitBits(s_DmaTxComplete, PCM_AMP_DMA_TX_COMPLETE_EVT_BIT, pdTRUE, pdTRUE, portMAX_DELAY);
and never pass
