diff --git a/README.md b/README.md index 201d0f250..db43813bb 100644 --- a/README.md +++ b/README.md @@ -218,6 +218,7 @@ Libraries that don't rely on low-level access to AVR registers should work well. - [PubSubClient](https://github.com/Imroy/pubsubclient) MQTT library by @Imroy. - [RTC](https://github.com/Makuna/Rtc) - Arduino Library for Ds1307 & Ds3231 compatible with esp8266. - [Souliss, Smart Home](https://github.com/souliss/souliss) - Framework for Smart Home based on Arduino, Android and openHAB. +- [ST7735](https://github.com/nzmichaelh/Adafruit-ST7735-Library) - Adafruit's ST7735 library modified to be compatible with esp8266. Just make sure to modify the pins in the examples as they are still AVR specific. #### Upload via serial port #### Pick the correct serial port. diff --git a/cores/esp8266/Arduino.h b/cores/esp8266/Arduino.h index c712bf756..ad0e7cb36 100644 --- a/cores/esp8266/Arduino.h +++ b/cores/esp8266/Arduino.h @@ -39,6 +39,7 @@ extern "C" { #include "twi.h" void yield(void); +void optimistic_yield(void); #define HIGH 0x1 #define LOW 0x0 diff --git a/cores/esp8266/HardwareSerial.cpp b/cores/esp8266/HardwareSerial.cpp index e77fe3ef4..493561a24 100644 --- a/cores/esp8266/HardwareSerial.cpp +++ b/cores/esp8266/HardwareSerial.cpp @@ -552,13 +552,17 @@ bool HardwareSerial::isRxEnabled(void) { } int HardwareSerial::available(void) { - if(_uart == 0) - return 0; - if(_uart->rxEnabled) { - return static_cast(_rx_buffer->getSize()); - } else { - return 0; + int result = 0; + + if (_uart != NULL && _uart->rxEnabled) { + result = static_cast(_rx_buffer->getSize()); } + + if (!result) { + optimistic_yield(); + } + + return result; } int HardwareSerial::peek(void) { diff --git a/cores/esp8266/core_esp8266_main.cpp b/cores/esp8266/core_esp8266_main.cpp index dcf5631ea..ca7805569 100644 --- a/cores/esp8266/core_esp8266_main.cpp +++ b/cores/esp8266/core_esp8266_main.cpp @@ -34,6 +34,8 @@ extern "C" { #define LOOP_TASK_PRIORITY 0 #define LOOP_QUEUE_SIZE 1 +#define OPTIMISTIC_YIELD_TIME_US 16000 + struct rst_info resetInfo; int atexit(void (*func)()) { @@ -62,11 +64,8 @@ extern void (*__init_array_end)(void); cont_t g_cont __attribute__ ((aligned (16))); static os_event_t g_loop_queue[LOOP_QUEUE_SIZE]; -static uint32_t g_micros_at_task_start; +static uint32_t g_micros_at_last_task_yield; -extern "C" uint32_t esp_micros_at_task_start() { - return g_micros_at_task_start; -} extern "C" void abort() { while(1) { @@ -74,6 +73,7 @@ extern "C" void abort() { } extern "C" void esp_yield() { + g_micros_at_last_task_yield = system_get_time(); cont_yield(&g_cont); } @@ -87,6 +87,14 @@ extern "C" void __yield() { } extern "C" void yield(void) __attribute__ ((weak, alias("__yield"))); +extern "C" void optimistic_yield(void) { + if (!ETS_INTR_WITHINISR() && + (system_get_time() - g_micros_at_last_task_yield) > OPTIMISTIC_YIELD_TIME_US) + { + __yield(); + } +} + static void loop_wrapper() { static bool setup_done = false; if(!setup_done) { @@ -99,7 +107,7 @@ static void loop_wrapper() { } static void loop_task(os_event_t *events) { - g_micros_at_task_start = system_get_time(); + g_micros_at_last_task_yield = system_get_time(); cont_run(&g_cont, &loop_wrapper); if(cont_check(&g_cont) != 0) { ets_printf("\r\nheap collided with sketch stack\r\n"); diff --git a/cores/esp8266/core_esp8266_si2c.c b/cores/esp8266/core_esp8266_si2c.c index d825c4445..3dd791dc7 100644 --- a/cores/esp8266/core_esp8266_si2c.c +++ b/cores/esp8266/core_esp8266_si2c.c @@ -1,9 +1,9 @@ -/* +/* si2c.c - Software I2C library for esp8266 Copyright (c) 2015 Hristo Gochkov. All rights reserved. This file is part of the esp8266 core for Arduino environment. - + This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either @@ -26,10 +26,10 @@ unsigned char twi_dcount = 18; static unsigned char twi_sda, twi_scl; #define SDA_LOW() (GPES = (1 << twi_sda)) //Enable SDA (becomes output and since GPO is 0 for the pin, it will pull the line low) -#define SDA_HIGH() (GPEC = (1 << twi_sda)) //Disable SDA (becomes input and since it has pullup it will go high) +#define SDA_HIGH() (GPEC = (1 << twi_sda)) //Disable SDA (becomes input and since it has pullup it will go high) #define SDA_READ() ((GPI & (1 << twi_sda)) != 0) -#define SCL_LOW() (GPES = (1 << twi_scl)) -#define SCL_HIGH() (GPEC = (1 << twi_scl)) +#define SCL_LOW() (GPES = (1 << twi_scl)) +#define SCL_HIGH() (GPEC = (1 << twi_scl)) #define SCL_READ() ((GPI & (1 << twi_scl)) != 0) #ifndef FCPU80 @@ -37,9 +37,9 @@ static unsigned char twi_sda, twi_scl; #endif #if F_CPU == FCPU80 -#define TWI_CLOCK_STRETCH 200 +#define TWI_CLOCK_STRETCH 800 #else -#define TWI_CLOCK_STRETCH 400 +#define TWI_CLOCK_STRETCH 1600 #endif void twi_setClock(unsigned int freq){ @@ -99,7 +99,7 @@ static bool twi_write_stop(void){ twi_delay(twi_dcount); SDA_HIGH(); twi_delay(twi_dcount); - + return true; } @@ -166,7 +166,8 @@ unsigned char twi_readFrom(unsigned char address, unsigned char* buf, unsigned i unsigned int i; if(!twi_write_start()) return 4;//line busy if(!twi_write_byte(((address << 1) | 1) & 0xFF)) return 2;//received NACK on transmit of address - for(i=0; iwrite(reinterpret_cast(buf), size); } -extern "C" uint32_t esp_micros_at_task_start(); - int WiFiClient::available() { - static uint32_t lastPollTime = 0; - if (!_client) - return 0; + int result = 0; - if (lastPollTime > esp_micros_at_task_start()) - yield(); + if (_client) { + result = _client->getSize(); + } - lastPollTime = micros(); - - int result = _client->getSize(); + if (!result) { + optimistic_yield(); + } return result; } diff --git a/libraries/ESP8266WiFi/src/WiFiServer.cpp b/libraries/ESP8266WiFi/src/WiFiServer.cpp index 69ad4ff81..cf975a330 100644 --- a/libraries/ESP8266WiFi/src/WiFiServer.cpp +++ b/libraries/ESP8266WiFi/src/WiFiServer.cpp @@ -84,8 +84,6 @@ bool WiFiServer::getNoDelay(){ return tcp_nagle_disabled(_pcb); } -extern "C" uint32_t esp_micros_at_task_start(); - bool WiFiServer::hasClient(){ if (_unclaimed) return true; return false; @@ -93,8 +91,6 @@ bool WiFiServer::hasClient(){ WiFiClient WiFiServer::available(byte* status) { - static uint32_t lastPollTime = 0; - if (_unclaimed) { WiFiClient result(_unclaimed); @@ -103,9 +99,7 @@ WiFiClient WiFiServer::available(byte* status) return result; } - if (lastPollTime > esp_micros_at_task_start()) - yield(); - lastPollTime = micros(); + optimistic_yield(); return WiFiClient(); } diff --git a/libraries/ESP8266WiFi/src/WiFiUdp.cpp b/libraries/ESP8266WiFi/src/WiFiUdp.cpp index 80b005556..71f8ff41a 100644 --- a/libraries/ESP8266WiFi/src/WiFiUdp.cpp +++ b/libraries/ESP8266WiFi/src/WiFiUdp.cpp @@ -116,9 +116,17 @@ uint8_t WiFiUDP::beginMulticast(IPAddress interfaceAddr, IPAddress multicast, ui /* return number of bytes available in the current packet, will return zero if parsePacket hasn't been called yet */ int WiFiUDP::available() { - if (!_ctx) - return 0; - return static_cast(_ctx->getSize()); + int result = 0; + + if (_ctx) { + result = static_cast(_ctx->getSize()); + } + + if (!result) { + optimistic_yield(); + } + + return result; } /* Release any resources being used by this WiFiUDP instance */ diff --git a/libraries/Wire/Wire.cpp b/libraries/Wire/Wire.cpp index 759159203..84b4c8c22 100644 --- a/libraries/Wire/Wire.cpp +++ b/libraries/Wire/Wire.cpp @@ -161,7 +161,13 @@ size_t TwoWire::write(const uint8_t *data, size_t quantity){ } int TwoWire::available(void){ - return rxBufferLength - rxBufferIndex; + int result = rxBufferLength - rxBufferIndex; + + if (!result) { + optimistic_yield(); + } + + return result; } int TwoWire::read(void){ diff --git a/tools/sdk/include/ets_sys.h b/tools/sdk/include/ets_sys.h index a96e2f0be..8d7adbde3 100644 --- a/tools/sdk/include/ets_sys.h +++ b/tools/sdk/include/ets_sys.h @@ -61,6 +61,14 @@ typedef void (*int_handler_t)(void*); #define ETS_INTR_DISABLE(inum) \ ets_isr_mask((1< 0); +} + inline uint32_t ETS_INTR_ENABLED(void) { uint32_t enabled;