Large Digits
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This Applications note shows how easy it is to utilize large digits that are built into Matrix Orbital displays.
Our alphanumeric displays have the ability to
display large digits. This is usefull if you want to see the
temperature in large easy to read letters.
Stamp: Javelin Stamp
Communication Type: Serial
Display Used: Any Matrix Orbital display that supports serial communication such as the MOS or LK/VK/PK series
Introduction:
Large digits is a combination of the 8 custom characters an alphanumeric display has. These 8 custom characters are user defined and can be used how ever the user sees fit. You will have to note, that you cannot use Large Digits, Bar Graps or user defined Custom Characters at the same time. It has to be one or the other.
Countdown Example:
// Uart.dirTransmit -> Uart will be used to transmit data only.
// CPU.pin0 -> Pin used to transmit data
// Uart.dontInvert -> data is not inverted
// Uart.speed19200 -> serial data transfer speed (baud rate)
// Uart.stop1 -> Number of stop bits used is 1
static Uart txUart = new Uart(Uart.dirTransmit, CPU.pin0, Uart.dontInvert, Uart.speed19200, Uart.stop1 );
// Countdown from 9 to 0
txUart.sendByte(0xFE); // Command prefix
txUart.sendByte(0x6E); // Initialize large digits
for(i = 9; i >= 0; i--) // Iterate from 9 to 0
{
txUart.sendByte(0xFE); // Command prefix
txUart.sendByte(0x23); // Place large digits command
txUart.sendByte(19); // Column where to start placing digit
txUart.sendByte(i); // Digit to display (From 9 to 0)
CPU.delay(30000); // Pause for 3 seconds to allow viewing
}
In this code, the display will display 10 large digits, starting with 9 and going to 0. You can expand on this by creating 2+ more numbers at the same time. This code is usefull for the digital thermometer we will be building next.
For technical discussions and questions, please visit ourforums
Stamp: Javelin Stamp
Communication Type: Serial
Display Used: Any Matrix Orbital display that supports serial communication such as the MOS or LK/VK/PK series
Introduction:
Large digits is a combination of the 8 custom characters an alphanumeric display has. These 8 custom characters are user defined and can be used how ever the user sees fit. You will have to note, that you cannot use Large Digits, Bar Graps or user defined Custom Characters at the same time. It has to be one or the other.
Countdown Example:
// Uart.dirTransmit -> Uart will be used to transmit data only.
// CPU.pin0 -> Pin used to transmit data
// Uart.dontInvert -> data is not inverted
// Uart.speed19200 -> serial data transfer speed (baud rate)
// Uart.stop1 -> Number of stop bits used is 1
static Uart txUart = new Uart(Uart.dirTransmit, CPU.pin0, Uart.dontInvert, Uart.speed19200, Uart.stop1 );
// Countdown from 9 to 0
txUart.sendByte(0xFE); // Command prefix
txUart.sendByte(0x6E); // Initialize large digits
for(i = 9; i >= 0; i--) // Iterate from 9 to 0
{
txUart.sendByte(0xFE); // Command prefix
txUart.sendByte(0x23); // Place large digits command
txUart.sendByte(19); // Column where to start placing digit
txUart.sendByte(i); // Digit to display (From 9 to 0)
CPU.delay(30000); // Pause for 3 seconds to allow viewing
}
In this code, the display will display 10 large digits, starting with 9 and going to 0. You can expand on this by creating 2+ more numbers at the same time. This code is usefull for the digital thermometer we will be building next.
For technical discussions and questions, please visit ourforums
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