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diogoviannaaraujomkellner
diogoviannaaraujo
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mkellner
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Preliminary version of hardware Serial communication module for esp32 #73 
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‎contributed/serial/esp32/modSerial.c‎

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/*
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* Copyright (c) 2016-2018 Moddable Tech, Inc.
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*
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* This file is part of the Moddable SDK Runtime.
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*
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* The Moddable SDK Runtime is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* The Moddable SDK Runtime is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with the Moddable SDK Runtime. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "mc.defines.h"
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#include "modSerial.h"
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#include "xsesp.h"
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#include "driver/uart.h"
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static uint8_t modSerialActivate(modSerialConfiguration config);
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void modSerialInit(modSerialConfiguration config)
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{
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modSerialActivate(config);
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}
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void modSerialUninit(modSerialConfiguration config)
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{
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uart_driver_delete(UART_NUM_1);
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}
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uint8_t modSerialRead(modSerialConfiguration config, uint8_t *buffer, uint16_t length)
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{
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int ret;
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ret = uart_read_bytes(UART_NUM_1, buffer, length, 100);
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return (ret > 0) ? 0 : 1;
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}
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uint8_t modSerialWrite(modSerialConfiguration config, const uint8_t *buffer)
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{
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int ret;
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ret = uart_write_bytes(UART_NUM_1, buffer, strlen(buffer));
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return (ret > 0) ? 0 : 1;
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}
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uint8_t modSerialActivate(modSerialConfiguration config)
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{
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modLog("Activating uart");
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uart_config_t conf;
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conf.baud_rate = config->baudrate;
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conf.data_bits = UART_DATA_8_BITS;
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conf.parity = UART_PARITY_DISABLE;
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conf.stop_bits = UART_STOP_BITS_1;
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conf.flow_ctrl = UART_HW_FLOWCTRL_DISABLE;
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conf.rx_flow_ctrl_thresh = 122;
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if (ESP_OK != uart_param_config(UART_NUM_1, &conf)) {
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modLog("uart_param_config fail");
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return 1;
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}
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if (ESP_OK != uart_set_pin(UART_NUM_1, config->tx, config->rx, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE)) {
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modLog("uart_set_pin fail");
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return 1;
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}
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if (ESP_OK != uart_driver_install(UART_NUM_1, 1024, 1024, 10, NULL, 0)) {
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modLog("uart_driver_install fail");
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return 1;
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}
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return 0;
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}
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‎contributed/serial/esp32/modSerial.h‎

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/*
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* Copyright (c) 2016-2018 Moddable Tech, Inc.
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*
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* This file is part of the Moddable SDK Runtime.
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*
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* The Moddable SDK Runtime is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* The Moddable SDK Runtime is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with the Moddable SDK Runtime. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef __MODSERIAL_H__
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#define __MODSERIAL_H__
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#include "stdint.h"
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typedef struct modSerialConfigurationRecord modSerialConfigurationRecord;
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typedef struct modSerialConfigurationRecord *modSerialConfiguration;
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struct modSerialConfigurationRecord {
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uint32_t baudrate;
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int16_t rx;
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int16_t tx;
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};
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typedef struct modSerialConfigurationRecord modSerialConfigurationRecord;
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typedef struct modSerialConfigurationRecord *modSerialConfiguration;
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extern void modSerialInit(modSerialConfiguration config); // required
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extern void modSerialUninit(modSerialConfiguration config); // optional
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extern uint8_t modSerialRead(modSerialConfiguration config, uint8_t *buffer, uint16_t length);
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extern uint8_t modSerialWrite(modSerialConfiguration config, const uint8_t *buffer);
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#endif

‎contributed/serial/examples/loopback/main.js‎

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/*
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* Copyright (c) 2016-2017 Moddable Tech, Inc.
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*
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* This file is part of the Moddable SDK.
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*
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* This work is licensed under the
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* Creative Commons Attribution 4.0 International License.
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* To view a copy of this license, visit
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* <http://creativecommons.org/licenses/by/4.0>.
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* or send a letter to Creative Commons, PO Box 1866,
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* Mountain View, CA 94042, USA.
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*
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*/
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import Timer from "timer";
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import Serial from "pins/serial";
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let loopback = new Serial({baudrate: 9600, rx: 33, tx: 32});
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const timer = Timer.repeat(id => {
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loopback.write("Echo\n");
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let ret = loopback.read(40);
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trace(String.fromCharCode.apply(String, ret));
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}, 1000);
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‎contributed/serial/examples/loopback/manifest.json‎

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{
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"include": [
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"$(MODDABLE)/examples/manifest_base.json",
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"$(MODDABLE)/modules/pins/serial/manifest.json"
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],
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"modules": {
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"*": [
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"./main",
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"$(MODULES)/data/hex/*"
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]
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}
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}
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‎contributed/serial/manifest.json‎

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{
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"platforms": {
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"esp32": {
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"modules": {
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"*": "$(MODULES)/pins/serial/esp32/*",
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"pins/serial": "$(MODULES)/pins/serial/serial"
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},
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"preload": "pins/serial"
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},
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"...": {
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"error": "Hardware serial is unsupported"
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}
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}
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}
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‎contributed/serial/serial.c‎

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/*
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* Copyright (c) 2016-2018 Moddable Tech, Inc.
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*
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* This file is part of the Moddable SDK Runtime.
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*
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* The Moddable SDK Runtime is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* The Moddable SDK Runtime is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with the Moddable SDK Runtime. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "xsmc.h"
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#ifdef gecko
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#include "xsPlatform.h"
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#include "xsgecko.h"
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#else
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#include "xsesp.h"
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#endif
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#include "mc.xs.h" // for xsID_ values
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#include "modSerial.h"
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/*
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Serial
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*/
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void xs_serial(xsMachine *the)
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{
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modSerialConfiguration serial;
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int baudrate, rx, tx = 0;
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xsmcVars(1);
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xsmcGet(xsVar(0), xsArg(0), xsID_baudrate);
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baudrate = (xsUndefinedType == xsmcTypeOf(xsVar(0))) ? -1 : xsmcToInteger(xsVar(0));
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xsmcGet(xsVar(0), xsArg(0), xsID_rx);
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rx = (xsUndefinedType == xsmcTypeOf(xsVar(0))) ? -1 : xsmcToInteger(xsVar(0));
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xsmcGet(xsVar(0), xsArg(0), xsID_tx);
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tx = xsmcToInteger(xsVar(0));
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serial = xsmcSetHostChunk(xsThis, NULL, sizeof(modSerialConfigurationRecord));
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serial->baudrate = baudrate;
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serial->rx = rx;
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serial->tx = tx;
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modSerialInit(serial);
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}
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void xs_serial_destructor(void *data)
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{
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if (data)
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modSerialUninit((modSerialConfiguration)data);
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}
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void xs_serial_close(xsMachine *the)
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{
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modSerialConfiguration serial = xsmcGetHostChunk(xsThis);
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if (serial) {
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modSerialUninit(serial);
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xsmcSetHostData(xsThis, NULL); // this clears the host chunk allocated
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}
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}
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void xs_serial_read(xsMachine *the)
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{
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modSerialConfiguration serial;
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int argc = xsmcArgc;
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unsigned int len = xsmcToInteger(xsArg(0)), i;
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unsigned char err;
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unsigned char buffer[40];
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if (len > sizeof(buffer))
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xsUnknownError("40 byte read limit");
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serial = xsmcGetHostChunk(xsThis);
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err = modSerialRead(serial, buffer, len);
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if (err)
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return; // undefined returned on read failure
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if (argc >= 2) {
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int bufferByteLength;
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xsResult = xsArg(1);
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bufferByteLength = xsGetArrayBufferLength(xsResult);
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if (bufferByteLength < len)
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xsUnknownError("buffer too small");
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c_memmove(xsmcToArrayBuffer(xsResult), buffer, len);
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}
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else {
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xsResult = xsArrayBuffer(buffer, len);
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xsResult = xsNew1(xsGlobal, xsID_Uint8Array, xsResult);
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}
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}
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void xs_serial_write(xsMachine *the)
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{
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modSerialConfiguration serial;
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uint8_t argc = xsmcArgc, i;
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unsigned char err;
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uint8_t stop = true;
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unsigned int len = 0;
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unsigned char buffer[40];
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xsmcVars(1);
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for (i = 0; i < argc; i++) {
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xsType t = xsmcTypeOf(xsArg(i));
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if ((xsBooleanType == t) && ((argc - 1) == i)) {
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stop = xsmcToBoolean(xsArg(i));
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continue;
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}
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if ((xsNumberType == t) || (xsIntegerType == t)) {
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if ((len + 1) > sizeof(buffer))
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xsUnknownError("40 byte write limit");
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buffer[len++] = (unsigned char)xsmcToInteger(xsArg(i));
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continue;
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}
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if (xsStringType == t) {
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char *s = xsmcToString(xsArg(i));
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int l = c_strlen(s);
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if ((len + l) > sizeof(buffer))
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xsUnknownError("40 byte write limit");
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c_memcpy(buffer + len, s, l);
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len += l;
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continue;
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}
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{ // assume some kind of array (Array, Uint8Array, etc) (@@ use .buffer if present)
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int l;
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uint8_t j;
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xsmcGet(xsVar(0), xsArg(i), xsID_length);
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l = xsmcToInteger(xsVar(0));
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if ((len + l) > sizeof(buffer))
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xsUnknownError("40 byte write limit");
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for (j = 0; j < l; j++) {
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xsmcGet(xsVar(0), xsArg(i), j);
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buffer[len++] = xsmcToInteger(xsVar(0));
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}
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}
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}
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serial = xsmcGetHostChunk(xsThis);
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err = modSerialWrite(serial, buffer);
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if (err)
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xsUnknownError("write failed");
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}
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‎contributed/serial/serial.js‎

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/*
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* Copyright (c) 2016-2017 Moddable Tech, Inc.
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*
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* This file is part of the Moddable SDK Runtime.
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*
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* The Moddable SDK Runtime is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* The Moddable SDK Runtime is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with the Moddable SDK Runtime. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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export class Serial @ "xs_serial_destructor" {
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constructor(dictionary) @ "xs_serial";
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close() @ "xs_serial_close";
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read(count) @ "xs_serial_read";
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write() @ "xs_serial_write";
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}
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Object.freeze(Serial.prototype);
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export default Serial;
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