IanalogWritef()

IanalogWritef()

IanalogWritef() converts a user floating-point value to the analog output range and outputs it.

void IanalogWritef(uint8_t ch, float min, float max, float value)

Commands

Command	Arguments	Return Value	Operation
`IanalogWritef(ch, min, max, value)`	`uint8_t ch` — Analog output pin or channel to write `float min` — Minimum of the user input range `float max` — Maximum of the user input range `float value` — User input value to output	`void`	Converts a user floating-point 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 float demandVolts = IanalogReadf(DEMAND_INPUT, 0.0F, 10.0F);  // Map the analog input value to the specified floating-point range.
  IanalogWritef(OUTPUT_CHANNEL, 0.0F, 10.0F, demandVolts);  // Map the user's floating-point value to the analog output range and output it.
 
  Serial.print(F("demand="));
  Serial.print(demandVolts, 2);
  Serial.println(F("V"));
  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

IanalogWritef()

Commands

Example

Precautions

Built-in Commands in the Same Category