ZBasic Forum

Posted: **26 July 2017, 6:28 AM**

Generic targets work great ,,, as long as You keep below ConsoleSpeed of 57600 ... 115200 does not work for my boards , is it a generic target issue or something i have overlooked ?
This affects both the 328P & Mega2560 . . .

Code: Select all

Option TargetDevice ATmega2560 
Option DeviceParameter clockFrequency 16000000 
Option DeviceParameter rtcFrequency 500 
Option DeviceParameter rtcScale 1 
Option DeviceParameter swUartDivisor 8 
Option DeviceParameter swUartMinSpeed 300 
Option DeviceParameter swUartMaxSpeed 19200 
Option DeviceParameter swUartBaseSpeed 2400 
Option DeviceParameter timerSpeed1Divisor 1 
Option DeviceParameter timerSpeed2Divisor 8 
Option DeviceParameter ZBasicBootloader True 

Option ConsoleSpeed 115200  ' 57600 works fine 
Option RTC on 
Option Signon on 
Option TxQueueSize 100 
Option RxQueueSize 40 
Option Console Com1 

Const Led as byte = B.7 

Sub Main&#40;&#41; 

Debug.Print "Hello From 2560" 

Do 
Debug.Print "Hello ." 
Call PutPin&#40;Led, 1&#41; 
Call Delay&#40;1.0&#41; 
Call PutPin&#40;Led, 0&#41; 
Debug.Print "It Really Works &#58;&#41;" 
Call Delay&#40;0.5&#41; 
Loop 
End Sub

Posted: **09 August 2017, 19:16 PM**

kurakaira wrote:Generic targets work great ,,, as long as You keep below ConsoleSpeed of 57600 ... 115200 does not work for my boards , is it a generic target issue or something i have overlooked ?

At 16MHz, the available divisors cannot produce an accurate baud rate at 115.2K baud and above. The error at 115.2K baud is 2.1%, at 230.4K baud it is 3.5%, and at 460.8K baud it is 8.5%. It should work at 76.8K baud where the error is only 0.2%.

You can see the list of baud rates and error values by using the Target Options dialog, setting the processor frequency, and clicking the Apply button.

ZBasic Forum

Generic UART not working above 57600

Generic UART not working above 57600

Re: Generic UART not working above 57600