somebody can help me with the radio module rda5807m?
i try to activate the registers of the module, but until now i hear only white noise, no sound at all. This is what i tried to write inside the module:
For register 03, radio frequency coding: 924 - 870 = 54 or binary code 110110, because the encoding register is 10 bits, then we add 0 to the upper digits, i.e. the code to write to the register will be 0000110110
SCL VAR PORTB.4 'I2C bus clock
SDA VAR PORTB.5 'I2C bus data
TRISB = %00000000
PORTB = %00000000
RG02H VAR BYTE
RG02L VAR BYTE
RG03H VAR BYTE
RG03L VAR BYTE
RG04H VAR BYTE
RG04L VAR BYTE
RG05H VAR BYTE
RG05L VAR BYTE
RG06H VAR BYTE
RG06L VAR BYTE
RG02H = %11000000
RG02L = %00000001 'on module
RG03H = %00001101 'The radio frequency is set to 92.4 MHz
RG03L = %10010000 'The radio frequency is set to 92.4 MHz
RG04H = %00000000
RG04L = %00000000
RG05H = %10001000
RG05L = %10001111 'antenna on, volume max
RG06H = %00000000
RG06L = %00000000
I2CWRITE SDA,SCL,$22,$02,[RG02H,RG02L]
I2CWRITE SDA,SCL,$22,$03,[RG03H,RG03L]
I2CWRITE SDA,SCL,$22,$04,[RG04H,RG04L]
I2CWRITE SDA,SCL,$22,$05,[RG05H,RG05L]
I2CWRITE SDA,SCL,$22,$06,[RG06H,RG06L]
END
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and this is another attempt:
Sharing registers 07 and 08 allows you to manually set the frequency of the radio station with increased accuracy (compared to register 03). In this case, the radio frequency coding is: 92400 kHz - 87000 kHz = 5400 or in binary code 1010100011000, because the encoding register is already 16 bits, then we add 0 to the upper bits, i.e. the code to write to the register will be 0001010100011000
SCL VAR PORTB.4 'I2C bus clock
SDA VAR PORTB.5 'I2C bus data
TRISB = %00000000
PORTB = %00000000
RG02 VAR WORD
RG03 VAR WORD
RG04 VAR WORD
RG05 VAR WORD
RG06 VAR WORD
RG02 = %1100000000000001 'on module
RG03 = %0000000000010000
RG04 = %0000000000000000
RG05 = %1000100010001111 'antenna on, volume max
RG06 = %0000000000000000
RG07 = %0100000000000011 'manual frequency setting mode
RG08 = %0001010100011000 'radio frequency 92.4 MHz
I2CWRITE SDA,SCL,$20,[RG02,RG03,RG04,RG05,RG06,RG07,RG08]
END
