diff options
| author | Matt Trentini <matt.trentini@gmail.com> | 2019-09-29 23:36:22 +1000 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2019-12-20 12:25:38 +1100 |
| commit | 7f235cbee924305e2d8a8aa86876770af66d7d82 (patch) | |
| tree | 55d81d67c01bf48f7f4554a8aee87e443cefc8bd /docs/esp32 | |
| parent | 0e0e6132fd90453eafabb71f355012cd82cf05b4 (diff) | |
docs/esp32: Add quickref and full docs for esp32.RMT class.
Diffstat (limited to 'docs/esp32')
| -rw-r--r-- | docs/esp32/general.rst | 1 | ||||
| -rw-r--r-- | docs/esp32/quickref.rst | 14 |
2 files changed, 15 insertions, 0 deletions
diff --git a/docs/esp32/general.rst b/docs/esp32/general.rst index 51918d4e1..8137c042d 100644 --- a/docs/esp32/general.rst +++ b/docs/esp32/general.rst @@ -52,6 +52,7 @@ For your convenience, some of technical specifications are provided below: * I2S: 2 * ADC: 12-bit SAR ADC up to 18 channels * DAC: 2 8-bit DACs +* RMT: 8 channels allowing accurate pulse transmit/receive * Programming: using BootROM bootloader from UART - due to external FlashROM and always-available BootROM bootloader, the ESP32 is not brickable diff --git a/docs/esp32/quickref.rst b/docs/esp32/quickref.rst index ef9b0a2e8..cfe31664e 100644 --- a/docs/esp32/quickref.rst +++ b/docs/esp32/quickref.rst @@ -365,6 +365,20 @@ Notes: p1 = Pin(4, Pin.OUT, None) +RMT +--- + +The RMT is ESP32-specific and allows generation of accurate digital pulses with +12.5ns resolution. See :ref:`esp32.RMT <esp32.RMT>` for details. Usage is:: + + import esp32 + from machine import Pin + + r = esp32.RMT(0, pin=Pin(18), clock_div=8) + r # RMT(channel=0, pin=18, source_freq=80000000, clock_div=8) + # The channel resolution is 100ns (1/(source_freq/clock_div)). + r.write_pulses((1, 20, 2, 40), start=0) # Send 0 for 100ns, 1 for 2000ns, 0 for 200ns, 1 for 4000ns + OneWire driver -------------- |