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LPC43xx: Add CREG6 struct definition. Add I2S CREG6 configuration.

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This commit is contained in:
Jared Boone 2017-08-06 11:16:57 -07:00
parent 80d96b08cf
commit 49252dc1bc
3 changed files with 22 additions and 13 deletions
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18
firmware/common/i2s.hpp
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@ -138,6 +138,7 @@ struct ConfigTX {
uint32_t txrate;
uint32_t txbitrate;
uint32_t txmode;
uint32_t sck_in_sel;
};
struct ConfigRX {
@ -145,6 +146,7 @@ struct ConfigRX {
uint32_t rxrate;
uint32_t rxbitrate;
uint32_t rxmode;
uint32_t sck_in_sel;
};
struct ConfigDMA {
@ -161,21 +163,13 @@ public:
) {
reset();
/* I2S operates in master mode, use PLL0AUDIO as MCLK source for TX. */
/* NOTE: Documentation of CREG6 is quite confusing. Refer to "I2S clocking and
* pin connections" and other I2S diagrams for more clarity.
*/
if( &p() == LPC_I2S0 ) {
LPC_CREG->CREG6 |=
(1U << 12)
| (1U << 13)
;
LPC_CREG->CREG6.I2S0_TX_SCK_IN_SEL = config_tx.sck_in_sel;
LPC_CREG->CREG6.I2S0_RX_SCK_IN_SEL = config_rx.sck_in_sel;
}
if( &p() == LPC_I2S1 ) {
LPC_CREG->CREG6 |=
(1U << 14)
| (1U << 15)
;
LPC_CREG->CREG6.I2S1_TX_SCK_IN_SEL = config_tx.sck_in_sel;
LPC_CREG->CREG6.I2S1_RX_SCK_IN_SEL = config_rx.sck_in_sel;
}
p().DAO = config_tx.dao;