A port of the arduino voltmeter example for the mbed using the 4.3' PCT 4d systems touch screen display. Uses the mbed_genie library ported from the arduino visie-genie library by Christian B
A test of the arduino voltmeter example using the 4.3' PCT 4d systems touch screen display.
This example program uses the mbed_genie library ported from the arduino Visi-Genie library by Christian B
The display serial TX and RX pins are connected to pin 9 and pin 10 of the mbed microcontroller
The reset pin is not connected as reset function is not implemented
Pin 15 of the mbed has a potentiometer wiper connected to it. The other connections of the potentiometer are connected to +3.3V and 0V - this is to provide some data for the demonstration and to ensure that we don't apply too much voltage to the analogue input pin
For setting up the display in Visie-Genie -
The display has an angular meter object, a LED digits object, two button objects and three static text objects.
The 4dButton0 (On) and the 4dButton1 (Off) button has been set to report on change within Visi-Genie object inspector
The serial baud rate of the display must be set to 115200 baud for this example to work. Ensure you have the settings correct in Visi-Genie when exporting the display program
The mbed program sends digital voltage readings to the LED digits and angular meter of the display module.
The volt readings will only be displayed if the appropriate button on the display is set!
I have written up a more in depth explanation on my blog here: