IsegWrite()

IsegWrite() outputs segment data at the specified position.

bool IsegWrite(const uint8_t segments[], uint8_t length = 4, uint8_t position = 0, uint8_t device = 0)

Commands

Command	Arguments	Return Value	Operation
`IsegWrite(segments, length, position, device)`	`const uint8_t segments[]` — Array of `XGFEDCBA` segment bits for each digit `uint8_t length = 4` — Number of digits to write `1~4` `uint8_t position = 0` — Start position `0~3`; the leftmost digit is `0` `uint8_t device = 0` — FND device number `0~6`, defaults to `0`	`bool`	Outputs segment data at the specified position.

Example

const uint8_t CLK_PIN = 14;
const uint8_t DIO_PIN = 15;
 
void setup() {
  IsegBegin(CLK_PIN, DIO_PIN, 100, 0);  // Set the CLK/DIO pins and device number of the TM1637 FND.
  IsegBrightness(5, true, 0);  // Set display brightness and on/off state.
}
 
void loop() {
  const uint16_t value = analogRead(A0);  // Read the raw analog value of the specified channel.
  uint8_t digits[4] = {
    IsegEncodeDigit((value / 1000) % 10),  // Convert one digit to segment data.
    IsegEncodeDigit((value / 100) % 10),  // Convert one digit to segment data.
    IsegEncodeDigit((value / 10) % 10),  // Convert one digit to segment data.
    IsegEncodeDigit(value % 10)  // Convert one digit to segment data.
  };
  IsegWrite(digits, 4, 0, 0);  // Output segment data at the specified position.
  delay(100);
}

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 7 or higher.
length + position must be 4 or less. Numbers outside the range are not displayed, and false is 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.

Built-in Commands in the Same Category

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ILOGICS Product Documentation

Table of Contents

IsegWrite()

Commands

Example

Precautions

Built-in Commands in the Same Category