TX Only with NewSoftSerial

Forum 2005-2010 (read only) Hardware Interfacing
1

G'Day
Am using NewSoftSerial library to drive a MAX7219(and it works, can be lucky sometimes). I never use the Serial Rx pin 2 specified in:-

NewSoftSerial mySerial(2, 3);

Is there anyway I can specify a null pin. Seems a shame to use a pin for nothing.

2

you can declare a nonexistent pin number for Rx, for example:
NewSoftSerial lcd(255, 3); // tx only

3

NewSoftSerial library to drive a MAX7219

???

this seems wrong, MAX7219 is a led controller that has an SPI interface. What are you giving it for a clock signal?

4

G'Day,
Tks mem so obvious too,.
Kily, yes my mistake, am using I2C, SPI One wire and serial LCD, so typed in the wrong protocol.
Grant