Please add ESP32 & hardware serials support

[mikekgr]

Dear Sir,
If you agree, please expand your nice library in order to support the ESP32 microcontroller both as ESP32 family ( at platforms ) and the hardware serials that they have.

Thanks and Best Regards,
Mike Kranidis

[olehs]

Hello, Mike.
I just order an ESP32 board on Aliexpress. I'll see what needs to be added to the library as soon as I receive it.

[mikekgr]

Dear @olehs ,
thanks a lot for your support. As far as I have see your library, the "problems" are ( and may be more ):

1. at your library.json file you need to include under platforms the esp32 family
2. you have to find a way to exclude softwareserial dependency when you use esp32. In this case a second hardware serial could be use like: HardwareSerial hwSerial1(2);
   Please keep me informed when you add ( hopefully ) the esp32 support.

Thanks and Best Regards,
Mike Kranidis

[olehs]

Please check the latest updates (see esp32 example)
p.s It can take some time while PlatformIO updates library version

[mikekgr]

Dear @olehs ,
thanks a lot. I will test it in the coming days and I will let you know.
Many thanks.
Best Regards,
Mike Kranidis

[banatus]

Dear @olehs
Pzem004T works very well with EPS32 such Doit or (16,17 pin ) Serial 2 . I use wemos lolin32 without 16,17 pin (http://www.instructables.com/id/ESP32-With-Integrated-OLED-WEMOSLolin-Getting-Star/) .
I have some trouble with Serial 2 . So I red http://support.iteadstudio.com/support/discussions/topics/11000014882 about How to change or add the pins : My code
HardwareSerial Serial1(1);
#define SERIAL1_RXPIN 25 or 12
#define SERIAL1_TXPIN 26 or 13

//HardwareSerial Serial2(2); // Use hwserial UART2 at pins IO-16 (RX2) and IO-17 (TX2)
//PZEM004T pzem(&Serial2);
PZEM004T pzem(&Serial1);
IPAddress ip(192,168,1,1);
It did work at all , I got many notification errors :
Rebooting...
ets Jun 8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x17 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0018,len:4
load:0x3fff001c,len:812
load:0x40078000,len:0
load:0x40078000,len:11572
entry 0x40078a5c
Guru Meditation Error: Core 0 panic'ed (Interrupt wdt timeout on CPU0)
Core 0 register dump:
PC : 0x400815dd PS : 0x00050034 A0 : 0x400d3552 A1 : 0x3ffc0600
A2 : 0x00000000 A3 : 0x00000009 A4 : 0x00000016 A5 : 0x3ffc05d0
A6 : 0x00000000 A7 : 0x00000003 A8 : 0x00000001 A9 : 0x400864dc
A10 : 0x00000000 A11 : 0x00000001 A12 : 0x0000cdcd A13 : 0x00000001
A14 : 0x00060021 A15 : 0x00060c23 SAR : 0x0000001d EXCCAUSE: 0x00000005
EXCVADDR: 0x00000000 LBEG : 0x00000000 LEND : 0x00000000 LCOUNT : 0x00000000
Core 0 was running in ISR context:
EPC1 : 0x400d3552 EPC2 : 0x00000000 EPC3 : 0x00000000 EPC4 : 0x400815dd
So I changed to the normal

HardwareSerial Serial2(2); // Use hwserial UART2 at pins IO-16 (RX2) and IO-17 (TX2)
PZEM004T pzem(&Serial2);
IPAddress ip(192,168,1,1);
It seems look good but the status is
Connecting to PZEM...
Connecting to PZEM...
Please give me some advice.
How to map the pins for Wemoslolin32
Thank you very much
Banatus S

[olehs]

To use Serial1 (likein you example) you have to reinit it with specified pins in your setup().
Try adding this code to setup()
Serial1.end();
Serial1.begin(9600, SERIAL_8N1, SERIAL1_RXPIN, SERIAL1_TXPIN);

[banatus]

Hi olehs
I tried to use serial1 and I couldn't make it in the first start.
So I decided to use the simple way to use serial2 and changed pin in HardwareSerial.cpp file instead.
void HardwareSerial::begin(unsigned long baud, uint32_t config, int8_t rxPin, int8_t txPin, bool invert)
{
if(_uart_nr == 0 && rxPin < 0 && txPin < 0) {
rxPin = 3;
txPin = 1;
}
if(_uart_nr == 1 && rxPin < 0 && txPin < 0) {
rxPin = 9;
txPin = 10;
}
if(_uart_nr == 2 && rxPin < 0 && txPin < 0) {
rxPin = 16;
txPin = 5;
}
_uart = uartBegin(_uart_nr, baud, config, rxPin, txPin, 256, invert);
}
from rxPin=16 txPin=17 to rx=16 and tx=5 of Wemoslolin32 http://www.instructables.com/id/ESP32-With-Integrated-OLED-WEMOSLolin-Getting-Star
It was sucessful. I got the information correctly.
227.30V; 0.00A; 0.00W; 12.00Wh;
Thank you
Banatus S