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esp32/machine_bitstream: Replace bit-bang code with RMT-based driver.

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This aims to solve glitching issues on long neopixel strips.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
This commit is contained in:
Jim Mussared
2021-11-11 23:36:27 +11:00
committed by Damien George
parent 09fe80d091
commit 599b61c086
3 changed files with 107 additions and 46 deletions
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6
ports/esp32/esp32_rmt.c
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@@ -29,6 +29,8 @@
#include "mphalport.h"
#include "driver/rmt.h"
#include "modesp32.h"
// This exposes the ESP32's RMT module to MicroPython. RMT is provided by the Espressif ESP-IDF:
//
// https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/rmt.html
@@ -73,6 +75,10 @@ STATIC mp_obj_t esp32_rmt_make_new(const mp_obj_type_t *type, size_t n_args, siz
mp_uint_t idle_level = args[3].u_bool;
mp_obj_t tx_carrier_obj = args[4].u_obj;
if (channel_id == MICROPY_HW_ESP32_RMT_CHANNEL_BITSTREAM) {
mp_raise_ValueError(MP_ERROR_TEXT("reserved channel id"));
}
if (clock_div < 1 || clock_div > 255) {
mp_raise_ValueError(MP_ERROR_TEXT("clock_div must be between 1 and 255"));
}