AD
Syntax
AD ( expression )
Description --- Not available on ARMstamp
AD will return 0.. that corresponds to the voltage on the pin corresponding to expression. The value returned will be between 0 and ... 65472, with the top 10 bits being significant. (bits 5..0 will be 0). 0 would be read for 0V and 65472 for 3.3V.
An analog conversion on pin expression is performed. This process takes less than 6 usec.
Dual Use AD pins
On reset or power up the AD pins are configured as AD inputs. To change those to digital IOs, the user must individually specify a control direction using INPUT x, OUTPUT x, DIR(x), or IO(x) commands. After that they will remain digital IOs until the next reset or power up.
Example
voltage = AD
(0) ' this will read the voltage on pin 0
Differences from other BASICs
- no equivalent in Visual BASIC
- no equivalent in PBASIC