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Diffstat (limited to 'esp8266/espapa102.c')
| -rw-r--r-- | esp8266/espapa102.c | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/esp8266/espapa102.c b/esp8266/espapa102.c deleted file mode 100644 index 4295fe42d8..0000000000 --- a/esp8266/espapa102.c +++ /dev/null @@ -1,115 +0,0 @@ -/* - * This file is part of the MicroPython project, http://micropython.org/ - * - * The MIT License (MIT) - * - * Copyright (c) 2016 Robert Foss, Daniel Busch - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#include "py/mpconfig.h" -#if MICROPY_ESP8266_APA102 - -#include <stdio.h> -#include "c_types.h" -#include "eagle_soc.h" -#include "user_interface.h" -#include "espapa102.h" - -#define NOP asm volatile(" nop \n\t") - -static inline void _esp_apa102_send_byte(uint32_t clockPinMask, uint32_t dataPinMask, uint8_t byte) { - for (uint32_t i = 0; i < 8; i++) { - if (byte & 0x80) { - // set data pin high - GPIO_REG_WRITE(GPIO_OUT_W1TS_ADDRESS, dataPinMask); - } else { - // set data pin low - GPIO_REG_WRITE(GPIO_OUT_W1TC_ADDRESS, dataPinMask); - } - - // set clock pin high - GPIO_REG_WRITE(GPIO_OUT_W1TS_ADDRESS, clockPinMask); - byte <<= 1; - NOP; - NOP; - - // set clock pin low - GPIO_REG_WRITE(GPIO_OUT_W1TC_ADDRESS, clockPinMask); - NOP; - NOP; - } -} - -static inline void _esp_apa102_send_colors(uint32_t clockPinMask, uint32_t dataPinMask, uint8_t *pixels, uint32_t numBytes) { - for (uint32_t i = 0; i < numBytes / 4; i++) { - _esp_apa102_send_byte(clockPinMask, dataPinMask, pixels[i * 4 + 3] | 0xE0); - _esp_apa102_send_byte(clockPinMask, dataPinMask, pixels[i * 4 + 2]); - _esp_apa102_send_byte(clockPinMask, dataPinMask, pixels[i * 4 + 1]); - _esp_apa102_send_byte(clockPinMask, dataPinMask, pixels[i * 4]); - } -} - -static inline void _esp_apa102_start_frame(uint32_t clockPinMask, uint32_t dataPinMask) { - for (uint32_t i = 0; i < 4; i++) { - _esp_apa102_send_byte(clockPinMask, dataPinMask, 0x00); - } -} - -static inline void _esp_apa102_append_additionial_cycles(uint32_t clockPinMask, uint32_t dataPinMask, uint32_t numBytes) { - GPIO_REG_WRITE(GPIO_OUT_W1TS_ADDRESS, dataPinMask); - - // we need to write some more clock cycles, because each led - // delays the data by one edge after inverting the clock - for (uint32_t i = 0; i < numBytes / 8 + ((numBytes / 4) % 2); i++) { - GPIO_REG_WRITE(GPIO_OUT_W1TS_ADDRESS, clockPinMask); - NOP; - NOP; - - GPIO_REG_WRITE(GPIO_OUT_W1TC_ADDRESS, clockPinMask); - NOP; - NOP; - } -} - -static inline void _esp_apa102_end_frame(uint32_t clockPinMask, uint32_t dataPinMask) { - for (uint32_t i = 0; i < 4; i++) { - _esp_apa102_send_byte(clockPinMask, dataPinMask, 0xFF); - } -} - -void esp_apa102_write(uint8_t clockPin, uint8_t dataPin, uint8_t *pixels, uint32_t numBytes) { - uint32_t clockPinMask, dataPinMask; - - clockPinMask = 1 << clockPin; - dataPinMask = 1 << dataPin; - - // start the frame - _esp_apa102_start_frame(clockPinMask, dataPinMask); - - // write pixels - _esp_apa102_send_colors(clockPinMask, dataPinMask, pixels, numBytes); - - // end the frame - _esp_apa102_append_additionial_cycles(clockPinMask, dataPinMask, numBytes); - _esp_apa102_end_frame(clockPinMask, dataPinMask); -} - -#endif |