we try to write to the safeload mechanism from a PIC24FJ128GA108 uC over I2C to an ADAU1452 DSP.
In the compiler_output.log the SafeLoad_Module addresses have been verified.
In the first step we want to set/unset a mute block.
The address of the parameter that should be changed has been found by changing the parameter and reading out the "Capture" view in Sigma Studio (4.1)
Also the compiler_output.log represents the same address.
Now we send our safeload command from the uC to the DSP.
The command is separated into three I2C commands for the three safeload registers (address, data, num_of_data)
1. send address_SafeLoad:
0x70 | 0x00 0x05 | 0x00 0x00 0x04 0x6E
DSP device address | address_SafeLoad address | Mute Register
2. send data_SafeLoad:
0x70 | 0x00 0x00 | 0x00 0x00 0x00 0x00
DSP device address | data_SafeLoad address | Data to mute
0x70 | 0x00 0x00 | 0x00 0x00 0x00 0x01
DSP device address | data_SafeLoad address | Data to un-mute
3. send num_SafeLoad:
0x70 | 0x00 0x06 | 0x00 0x00 0x00 0x01
DSP device address | num_SafeLoad address | Number of data-fields to send
All I2C transmits get an ACK so it looks like the DSP is receiving the messages but the mute is not toggled by our command.
It would be great if someone could help to get the safeload communication up and running.
Eliminates an copy and paste error
[edited by: logoho at 10:31 AM (GMT 0) on 8 Mar 2019]