I'm using a 12 bit ADC attached to pin 01 and I'm communicating with a DS75
temperature sensor attached to pins on port 1.
I have to routines:
The first one reads out the temperature sensor IC and sends the temperature over RS232
to the computer.
The seconds reads the 12 bit ADC and sends it also to the computer.
The problem:
When I'm just reading out the temperature or the voltage everything works.
BUT when I first read out the temperature and afterward the voltage the program hangs
at the "lcall ADCINC12_1_fIsDataAvaliable" command.
Thanks in advance for any help regarding to this problem!!!
The routines:
;============================================================
; Send Temperature over UART
;============================================================
Send_Temp:
mov [Tmp_Address], 0 //Read Temperature from Device with address 0
lcall tmp_read //Read it
mov A, [Temp] //Send it to Computer
lcall UART_1_PutChar
mov A, [Temp+1]
lcall UART_1_PutChar
ljmp loop //Jump back
;============================================================
; Send AD-Value over UART
;============================================================
Send_AD:
lcall ADCINC12_1_fIsDataAvaliable // If conversion complete....
jz Send_AD
lcall ADCINC12_1_ClearFlag
lcall ADCINC12_1_iGetData // Get result, convert to unsigned and clear flag
mov [iResult+1], A
mov [iResult+0], X
add [iResult+0], 0x08 // add 0x0800 to result
mov A, [iResult+1] //Send MSB first
lcall UART_1_PutChar
mov A, [iResult+0]
lcall UART_1_PutChar
ljmp loop
