Table of Contents
IsegDecimal()
IsegDecimal() displays an integer in decimal format.
bool IsegDecimal(int32_t number, bool leadingZero = false, uint8_t dotPosition = 0, uint8_t length = 4, uint8_t position = 0, uint8_t device = 0)
Commands
| Command | Arguments | Return Value | Operation |
|---|---|---|---|
IsegDecimal(number, leadingZero, dotPosition, length, position, device) | int32_t number — Decimal or hexadecimal value to displaybool leadingZero = false — true: leading zeros, false: leading spacesuint8_t dotPosition = 0 — Decimal point position. 0 means none; 1~length selects the digit from the leftuint8_t length = 4 — Number of digits to write 1~4uint8_t position = 0 — Start position 0~3; the leftmost digit is 0uint8_t device = 0 — FND device number 0~6, defaults to 0 | bool | Displays an integer in decimal format. |
Example
void setup() { IsegBegin(14, 15, 100, 0); // Set the CLK/DIO pins and device number of the TM1637 FND. IsegBegin(130, 131, 100, 1); // MPAINO K/K2 GPIO channels 0, 1 IsegBrightness(7, true, 0); // Set display brightness and on/off state. IsegBrightness(4, true, 1); // Set display brightness and on/off state. } void loop() { IsegDecimal(1234, false, 0, 4, 0, 0); // Display an integer in decimal format. IsegHex(0xABCD, false, 0, 4, 0, 1); // Display an integer in hexadecimal format. }
Precautions
- These commands are only for 4-digit FND displays with a TM1637 IC. They do not directly drive a generic multiplexed FND display.
- Use display commands after successfully calling
IsegBegin(). - Initialization fails if CLK and DIO use the same pin, or if the device number is
7or higher. length + positionmust be 4 or less. Numbers outside the range are not displayed, andfalseis returned.- Communication may block execution for several ms. Do not call this from an interrupt service routine.
- Do not use the specified pins simultaneously for UART, PWM, encoders, external interrupts or other functions.
- Check the actual module and product manuals for FND power and signal voltages.