DA7212 Beep generator on FRDM-K66F

Hello,

We are using the NXP Semiconductor FRDM-K66F development board as a prototype and evaluation platform. This system is convienent as it allows us to evaluate the Freescale K66F and the DA7212 - two devices we are interested in using for an audio application.

Our team has had difficulty in getting the beep/tone generator to work on this platform. Searching the forums has indicated that there may be an errata with this device with respect to the beep generator, particularly after reset/power cycle. We have been unable to generate a tone/beep using both the Freescale provided drivers, and bare metal I2C register peeks/pokes. I have attached some sample code that initializes the device and attempt to generate a continuous tone.

我们只是想要我也应该提到to play the tone through headphones via the HP jack on the card.

It would be most appreciated if a support engineer could review our code and suggest modifications.

Thank you in advance,

Scott

void manualInit() { printf ("Manual Initialization:\n"); audioCodec.writeRegister(0x92, 0x00); wait_ms(100); audioCodec.writeRegister(0x90, 0x80); audioCodec.writeRegister(0x29, 0xC8); audioCodec.writeRegister(0x22, 0x0B); audioCodec.writeRegister(0x94, 0x00); audioCodec.writeRegister(0x27, 0x84); audioCodec.writeRegister(0x2A, 0x32); audioCodec.writeRegister(0x4B, 0x08); audioCodec.writeRegister(0x4C, 0x08); audioCodec.writeRegister(0x47, 0xCD); audioCodec.writeRegister(0x95, 0x36); audioCodec.writeRegister(0x96, 0xA5); audioCodec.writeRegister(0x48, 0x2D); audioCodec.writeRegister(0x49, 0x2D); //audioCodec.writeRegister(0xFD, 0x01); audioCodec.writeRegister(0x51, 0xF1); uint8_t val; do { audioCodec.readRegister(0xE0, &val); printf(" SYSTEM STATUS = %02x\n", val); wait_ms(100); } while (val == 0x03); audioCodec.writeRegister(0xBB, 0x3F); audioCodec.writeRegister(0xB5, 0x01); audioCodec.writeRegister(0xB4, 0x80); printf("..DONE\n"); }