Hello I have a code written for nodemcu in Arduino IDE platform and I want to port it to arduino pro-mini connected with a esp8266-01 module with minimal change.
Original code have #include <ESP8266HTTPClient.h> and #include <ESP8266WiFi.h> since it it on nodemcu and I replaced "ESP8266WiFi" with "WiFiEsp" but I could not find a "ESP8266HTTPClient" replacement library. I tried "ArduinoHttpClient" library but it seems not having all members of "ESP8266HTTPClient". I get error with "ESP8266HTTPClient" begin(),addHeader(),POST(),getString(),end() functions.
Is there a library that covers ESP8266HTTPClient at all? Or some advices for this work?
Use a Wemos D1 mini pro instead of the couple Arduino + ESP01: you can use the same code as on your NodeMCU (and the same libraries), unless you really need a great deal of IOs.
elcrcp:
Hello I have a code written for nodemcu in Arduino IDE platform and I want to port it to arduino pro-mini connected with a esp8266-01 module with minimal change.
Am i correct in assuming that you want the pro-mini to master the ESP-01 using AT commands ? what does the code do ? (other than the wifi part)
I suspect you'll be better of, just loading the ESP-01 with most of the original code, including all the libraries that it does support, it has less memory than a nodeMCU, but it is basically the same thing. And turn the pro-mini into it's slave to perform the actions for which the ESP-01 lacks hardware (Pins really or SPI)
Use a Wemos D1 mini pro instead of the couple Arduino + ESP01:
then you may as well use a nodeMCU, they are cheaper !
lesept:
Use a Wemos D1 mini pro instead of the couple Arduino + ESP01: you can use the same code as on your NodeMCU (and the same libraries), unless you really need a great deal of IOs.
Nope, I already was on nodemcu and needed more digital pins and used all pins off pro-mini. So can't port to wemos.
Deva_Rishi:
Am i correct in assuming that you want the pro-mini to master the ESP-01 using AT commands ? what does the code do ? (other than the wifi part)
I suspect you'll be better of, just loading the ESP-01 with most of the original code, including all the libraries that it does support, it has less memory than a nodeMCU, but it is basically the same thing. And turn the pro-mini into it's slave to perform the actions for which the ESP-01 lacks hardware (Pins really or SPI) then you may as well use a nodeMCU, they are cheaper !
Yes you are correct. I'm driving ESP with AT commands. Thing is, there are many things to control. 5 input buttons, 3 output pins, i2c and spi communication, a hw uart to control and a sw uart for esp. So I can't use ESP as master. I gonna use ESP for http communication, gonna send counts and read replies then write messages to lcd.
Sure you can. Use ESP for all WiFi stuff and to be system master. Establish a serial protocol between it and the Pro Mini which will act as the slave and I/O expander. Or, better yet, use a slave board with multiple H/W Serial so you don't have to mess with Software Serial.
gfvalvo:
Sure you can. Use ESP for all WiFi stuff and to be system master. Establish a serial protocol between it and the Pro Mini which will act as the slave and I/O expander. Or, better yet, use a slave board with multiple H/W Serial so you don't have to mess with Software Serial.
I just did a quick search on google and enlightened =) I thought esp8266-01 module could only be used with AT commands over serial.
Ok so yes I can use it as a master then (or a slave, doesn't matter anymore since I can do any serial data transfer between them). Thanks for tips.
elcrcp:
Ok so yes I can use it as a master then (or a slave, doesn't matter anymore since I can do any serial data transfer between them). Thanks for tips.
Be aware of the fragility of the ESP-01 with 5v logic levels, i have fried many, though it is possible that this was just the result of an unfortunate choice of communication pins on the Arduino side (i used pins 11 & 12) and in the end have it setup using opto-couplers (PC817) at a fairly low BAUD-rate (9600) This proved to be reliable.
elcrcp:
Nope, I already was on nodemcu and needed more digital pins and used all pins off pro-mini. So can't port to wemos.
Then you might want to consider the newcoming ESP32-S2:
ESP32-S2 is a highly integrated, low-power, 2.4 GHz Wi-Fi Microcontroller supporting Wi-Fi HT40 and having 43 GPIOs. Based on an Xtensa® single-core 32-bit LX7 processor, ESP32-S2 can be clocked at up to 240 MHz.
IO Peripherals
43 programmable GPIOs
14 capacitive touch sensing IOs
Standard peripherals including SPI, I2C, I2S, UART, ADC/DAC and PWM
LCD (8-bit parallel RGB/8080/6800) interface and also support for 16/24-bit parallel
Camera interface supports 8 or 16-bit DVP image sensor, with clock frequency of up to 40 MHz
Full speed USB OTG support
There are many very complete libraries dealing with Wifi for ESP32.
