Boot DSP

Please find attached the generated file by sigmatudio.

The below function is called five times? Is it something wrong?

SIGMA_WRITE_REGISTER_BLOCK( DEVICE_ADDR_IC_1, PROGRAM_ADDR_IC_1, PROGRAM_SIZE_IC_1, Program_Data_IC_1 );

The project file attached for your reference.

HI:

A common problem in some designs is that the uC is not waiting long enough for the PLL to lock. Can you look into this? SigmaStudio uses the USBi and the USBi is not the fastest device to write either I2C or SPI and therefore it adds some delay. This delay is convenient when trying to lock the PLL. We have also added some delays in some of our sequences to compensate for that.

Regards

Miguel

Hello Hossein,

Miguel brings up a good point. Can you try to hold off the I2C or SPI accesses in the download function while waiting for the PLL to lock? Refer to theSigmaStudioFW.h (included in the SIgmaStudio installation path) which should also be included in the host MCU project. This file contains the two write macro fuctions you need to dowload the code/parameter data into the DSP using the default_download() function. In this file we need to write the host micro code for the SIGMA_WRITE_REGISTER_BLOCK() and SIGMA_WRITE_DELAY () functions.

Here is a small reference example which was used to initialze the ADAU1761 eval board using a ST STM32F10x host MCU in I2C mode, which shows the I2C transfer and delay function, which is just a simple for{} loop to create the delay.

void SIGMA_WRITE_REGISTER_BLOCK(int devAddress, int address, int length, ADI_REG_TYPE *pData )
{

int ii = 0;
int zz = 0;
Tx_Idx = 0;

/*----- Transmission Phase -----*/
ThisBufferSize = Address_Length + length;

I2C1_Buffer_Tx[0] = (address & 0xFF00)>>8;
I2C1_Buffer_Tx[1] = address & 0x00FF;

for(zz=0;zz<length;zz++)
{
I2C1_Buffer_Tx [zz + Address_Length] = pData[zz];
}
Tx_Idx = 0;
for(ii =0;ii < ThisBufferSize;ii++)
{

NextBufferEnd = ThisBufferSize;//I2C1_numbytes[ii];
if(ii == 0) I2C_GenerateSTART(I2C1, ENABLE);
/* Send data */
while(Tx_Idx < NextBufferEnd)
{

}

}
}

void SIGMA_WRITE_DELAY(int devAddress, int length, ADI_REG_TYPE *pData )
{
int nCount=0;
//nCount=0xFFFFFF;
//nCount=0x15752A00; //5 secs approx
//nCount=0x05F5E100; //5 secs approx
nCount=0xFFFFF;
for(; nCount != 0; nCount--);

}

Inside of your default_download() function (located in your xxx_IC1_1.h file) you can add the delay function right after programming the PLLCTRLREGISTER.

void default_download() {

SIGMA_WRITE_REGISTER_BLOCK( DEVICE_ADDR_IC_1, REG_SAMPLE_RATE_SETTING_ADDR, REG_SAMPLE_RATE_SETTING_BYTE, R0_SAMPLE_RATE_SETTING_Default );

SIGMA_WRITE_REGISTER_BLOCK( DEVICE_ADDR_IC_1, REG_DSP_RUN_REGISTER_ADDR, REG_DSP_RUN_REGISTER_BYTE, R1_DSP_RUN_REGISTER_Default );

SIGMA_WRITE_REGISTER_BLOCK( DEVICE_ADDR_IC_1, REG_CLKCTRLREGISTER_ADDR, REG_CLKCTRLREGISTER_BYTE, R2_CLKCTRLREGISTER_Default );

SIGMA_WRITE_REGISTER_BLOCK( DEVICE_ADDR_IC_1, REG_PLLCRLREGISTER_ADDR, REG_PLLCRLREGISTER_BYTE, R3_PLLCRLREGISTER_Default );

SIGMA_WRITE_DELAY( DEVICE_ADDR_IC_1, R4_DELAY_SIZE, R4_DELAY_Default );

SIGMA_WRITE_REGISTER_BLOCK( DEVICE_ADDR_IC_1, REG_SERIAL_PORT_CONTROL_0_ADDR , R5_SERIAL_PORT_CONTROL_REGISTERS_SIZE, R5_SERIAL_PORT_CONTROL_REGISTERS_Default );

SIGMA_WRITE_REGISTER_BLOCK( DEVICE_ADDR_IC_1, REG_ALC_CONTROL_0_ADDR ,

(...) ...

-JT

Sorry, I just realized that the SIGMA_WRITE_DELAY() call is already included in the auto-generated ADAU1761 default_download() function after the PLL register is programmed. Perhaps try to add a longer delay time. Are you able to read any of the on-chip registers?

-JT

Thank you very much for your comments, Miguel and John.

I have added some delays and tried with different delay time, but it doesn't help.

I have noticed that SigmaStudio generates different functions when using "export system files" compare to what is displayed in the capture window. the attached file shows what is displayed in the capture window.

With the "export system files", the five following fuctions are called.

SIGMA_WRITE_REGISTER_BLOCK( DEVICE_ADDR_IC_1, PROGRAM_ADDR_IC_1, PROGRAM_SIZE_IC_1, Program_Data_IC_1 );

SIGMA_WRITE_REGISTER_BLOCK( DEVICE_ADDR_IC_1, PROGRAM_ADDR_IC_1, PROGRAM_SIZE_IC_1, Program_Data_IC_1 );

SIGMA_WRITE_REGISTER_BLOCK( DEVICE_ADDR_IC_1, PROGRAM_ADDR_IC_1, PROGRAM_SIZE_IC_1, Program_Data_IC_1 );

SIGMA_WRITE_REGISTER_BLOCK( DEVICE_ADDR_IC_1, PROGRAM_ADDR_IC_1, PROGRAM_SIZE_IC_1, Program_Data_IC_1 );

SIGMA_WRITE_REGISTER_BLOCK( DEVICE_ADDR_IC_1, PROGRAM_ADDR_IC_1, PROGRAM_SIZE_IC_1, Program_Data_IC_1 );

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Thank you,
EZ Admin