IanalogWrite()

IanalogWrite()

IanalogWrite() converts a user integer value to the analog output range and outputs it.

void IanalogWrite(uint8_t ch, int32_t min, int32_t max, int32_t value)

Commands

Command	Arguments	Return Value	Operation
`IanalogWrite(ch, min, max, value)`	`uint8_t ch` — Analog output pin or channel to write `int32_t min` — Minimum of the user input range `int32_t max` — Maximum of the user input range `int32_t value` — User input value to output	`void`	Converts a user integer value to the analog output range and outputs it.

Example

const uint8_t DEMAND_INPUT = A0;
const uint8_t OUTPUT_CHANNEL = 0;
 
void setup() {
  Serial.begin(115200);
}
 
void loop() {
  const int32_t demandPercent = IanalogRead(DEMAND_INPUT, 0, 100);  // Map the analog input value to the specified integer range.
  IanalogWrite(OUTPUT_CHANNEL, 0, 100, demandPercent);  // Map the user's integer value to the analog output range and output it.
 
  Serial.print(F("demand="));
  Serial.print(demandPercent);
  Serial.println(F("%"));
  delay(250);
}

Precautions

The argument order must be ch, min, max, value.
min and max define the user input range for interpreting value, rather than directly setting the electrical output range.
If value is outside min~max, the internal Iscalef() clamps it to the nearest endpoint.
Setting min greater than max reverses the output direction.
If min equals max, the output value is 0.
Changing Timer TOP with analogWriteInit() or analogWriteFreq() also changes the actual analogWrite() output range. Use the default TOP 65535 to retain 16-bit 0~65535 resolution.
Match the output module DIP switches, external supply and wiring to the connected equipment's input specifications.
Do not use these together with PWM, pulse output or counter commands using the same timer.

Built-in Commands in the Same Category

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Table of Contents

IanalogWrite()

Commands

Example

Precautions

Built-in Commands in the Same Category