diff options
| author | Marti Bolivar <mbolivar@mit.edu> | 2010-10-25 21:15:28 -0400 |
|---|---|---|
| committer | Marti Bolivar <mbolivar@mit.edu> | 2010-11-17 12:44:28 -0500 |
| commit | 95783b750fda95f5f4c1fac00ab24da03b31b517 (patch) | |
| tree | 2b0bf89c101aa58af5796fbe76c7ec98eebbb0a5 /wirish/io.h | |
| parent | 3a9a119e9a8ce72c0e1b8fa4d3904bdf84ce355c (diff) | |
| download | librambutan-95783b750fda95f5f4c1fac00ab24da03b31b517.tar.gz librambutan-95783b750fda95f5f4c1fac00ab24da03b31b517.zip | |
arduino language reference nearing completion, properly CC-BY-SA 3.0 attributed
Diffstat (limited to 'wirish/io.h')
| -rw-r--r-- | wirish/io.h | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/wirish/io.h b/wirish/io.h index f82e414..f01efcb 100644 --- a/wirish/io.h +++ b/wirish/io.h @@ -148,13 +148,17 @@ uint32 digitalRead(uint8); /** * Read an analog value from pin. This function blocks during ADC - * conversion. The pin must have its mode set to INPUT_ANALOG. + * conversion, and has 12 bits of resolution. The pin must have its + * mode set to INPUT_ANALOG. Ignoring function call overhead, + * conversion time is 55.5 cycles. * - * @param pin Pin to read from. One of: 0-38 (pin numbers as labeled - * on silkscreen), or D0-D38 (symbols for same) - * @return ADC-converted voltage, in the range 0--4095, inclusive. + * @param pin Pin to read from. One of: 0, 1, 2, 3, 10, 11, 12, 13, + * 15, 16, 17, 18, 19, 20, 27, 28. + + * @return ADC-converted voltage, in the range 0--4095, inclusive + * (i.e. a 12-bit ADC conversion). + * @see pinMode() - * @see analogReference() */ uint32 analogRead(uint8 pin); |