mirror of https://github.com/arendst/Tasmota.git
285 lines
8.9 KiB
C++
285 lines
8.9 KiB
C++
/*
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xdrv_52_3_berry_native.ino - Berry scripting language, native fucnctions
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Copyright (C) 2021 Stephan Hadinger, Berry language by Guan Wenliang https://github.com/Skiars/berry
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU 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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This program 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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef USE_BERRY
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#ifdef USE_I2C
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#include <berry.h>
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#include <Wire.h>
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// read the `bus` attribute and return `Wire` or `Wire1`
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// Can return nullptr reference if the bus is not initialized
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TwoWire & getWire(bvm *vm);
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TwoWire & getWire(bvm *vm) {
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be_getmember(vm, 1, "bus");
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int32_t bus = be_toint(vm, -1); // bus is 1 or 2
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be_pop(vm, 1);
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if (1 == bus && TasmotaGlobal.i2c_enabled) {
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return Wire;
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} else if (2 == bus && TasmotaGlobal.i2c_enabled_2) {
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return Wire1;
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} else {
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be_raise(vm, "configuration_error", "I2C bus not initiliazedd");
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return *(TwoWire*)nullptr;
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}
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}
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bool I2cEnabled(bvm *vm);
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bool I2cEnabled(bvm *vm) {
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be_getmember(vm, 1, "bus");
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int32_t bus = be_toint(vm, -1); // bus is 1 or 2
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be_pop(vm, 1);
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if (1 == bus && TasmotaGlobal.i2c_enabled) {
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return true;
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} else if (2 == bus && TasmotaGlobal.i2c_enabled_2) {
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return true;
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} else {
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return false;
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}
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}
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int32_t getBus(bvm *vm); // 1 or 2
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int32_t getBus(bvm *vm) {
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be_getmember(vm, 1, "bus");
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int32_t bus = be_toint(vm, -1);
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be_pop(vm, 1);
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return bus;
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}
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/*********************************************************************************************\
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* Native functions mapped to Berry functions
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*
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* import wire
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*
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* wire.get_free_heap() -> int
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*
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\*********************************************************************************************/
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extern "C" {
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// Berry: `init([bus:int = 0]) -> nil
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int32_t b_wire_init(struct bvm *vm);
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int32_t b_wire_init(struct bvm *vm) {
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int32_t top = be_top(vm); // Get the number of arguments
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int32_t bus = 1;
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if (top > 1 && be_isint(vm, 2)) {
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bus = be_toint(vm, 2);
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if (bus < 1) { bus = 1; }
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if (bus > 2) { bus = 2; }
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}
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// store bus in instance
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be_pushint(vm, bus);
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be_setmember(vm, 1, "bus");
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be_return_nil(vm);
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}
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// Berry: `begintransmission(address:int) -> nil`
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int32_t b_wire_begintransmission(struct bvm *vm);
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int32_t b_wire_begintransmission(struct bvm *vm) {
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int32_t top = be_top(vm); // Get the number of arguments
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TwoWire & myWire = getWire(vm);
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if (top == 2 && be_isint(vm, 2)) { // only 1 argument of type string accepted
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int32_t address = be_toint(vm, 2);
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myWire.beginTransmission((int)address);
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be_return(vm); // Return
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}
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be_raise(vm, kTypeError, nullptr);
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}
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// Berry: `endtransmission([stop:bool]) -> nil`
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int32_t b_wire_endtransmission(struct bvm *vm);
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int32_t b_wire_endtransmission(struct bvm *vm) {
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int32_t top = be_top(vm); // Get the number of arguments
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TwoWire & myWire = getWire(vm);
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if (top == 1 || (top == 2 && be_isbool(vm, 2))) { // only 1 argument of type string accepted
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bool stop = true;
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if (top == 2) {
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stop = be_tobool(vm, 2);
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}
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uint32_t ret = myWire.endTransmission(stop);
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be_pushint(vm, ret);
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be_return(vm); // Return
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}
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be_raise(vm, kTypeError, nullptr);
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}
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// Berry: `requestfrom(address:int, quantity:int [stop:bool = true]) -> nil`
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int32_t b_wire_requestfrom(struct bvm *vm);
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int32_t b_wire_requestfrom(struct bvm *vm) {
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int32_t top = be_top(vm); // Get the number of arguments
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TwoWire & myWire = getWire(vm);
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if ( (top == 3 || (top == 4 && be_isbool(vm, 4)))
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&& be_isint(vm, 2) && be_isint(vm, 3) ) {
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int32_t address = be_toint(vm, 2);
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int32_t quantity = be_toint(vm, 3);
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bool stop = true;
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if (top == 4) {
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stop = be_tobool(vm, 4);
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}
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myWire.requestFrom((uint16_t)address, (uint8_t)quantity, stop);
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be_return(vm); // Return
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}
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be_raise(vm, kTypeError, nullptr);
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}
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// Berry: `available() -> bool`
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int32_t b_wire_available(struct bvm *vm);
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int32_t b_wire_available(struct bvm *vm) {
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int32_t top = be_top(vm); // Get the number of arguments
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TwoWire & myWire = getWire(vm);
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if (top == 1) {
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size_t available = myWire.available();
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be_pushint(vm, available);
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be_return(vm); // Return
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}
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be_raise(vm, kTypeError, nullptr);
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}
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// Berry: `write(value:int | s:string) -> nil`
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int32_t b_wire_write(struct bvm *vm);
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int32_t b_wire_write(struct bvm *vm) {
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int32_t top = be_top(vm); // Get the number of arguments
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const void * buf;
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size_t len;
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TwoWire & myWire = getWire(vm);
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if (top == 2 && (be_isint(vm, 2) || be_isstring(vm, 2) || be_isinstance(vm, 2))) {
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if (be_isint(vm, 2)) {
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int32_t value = be_toint(vm, 2);
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myWire.write(value);
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} else if (be_isstring(vm, 2)) {
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const char * s = be_tostring(vm, 1);
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myWire.write((uint8_t*) s, strlen(s));
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} else if ((buf = be_tobytes(vm, 2, &len)) != nullptr) {
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myWire.write((uint8_t*) buf, len);
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} else {
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be_return_nil(vm);
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}
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be_return(vm); // Return
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}
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be_raise(vm, kTypeError, nullptr);
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}
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// Berry: `read() -> int`
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int32_t b_wire_read(struct bvm *vm);
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int32_t b_wire_read(struct bvm *vm) {
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int32_t top = be_top(vm); // Get the number of arguments
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TwoWire & myWire = getWire(vm);
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if (top == 1) {
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int32_t value = myWire.read();
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be_pushint(vm, value);
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be_return(vm); // Return
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}
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be_raise(vm, kTypeError, nullptr);
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}
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int32_t b_wire_scan(struct bvm *vm);
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int32_t b_wire_scan(struct bvm *vm) {
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int32_t top = be_top(vm); // Get the number of arguments
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TwoWire & myWire = getWire(vm);
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if (top == 1) {
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be_newobject(vm, "list");
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for (uint8_t address = 1; address <= 127; address++) {
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myWire.beginTransmission(address);
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int32_t error = myWire.endTransmission();
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if (0 == error) {
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be_pushint(vm, address);
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be_data_push(vm, -2);
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be_pop(vm, 1);
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}
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}
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be_pop(vm, 1);
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be_return(vm); // Return
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}
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be_raise(vm, kTypeError, nullptr);
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}
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// Berry: `write(address:int, reg:int, val:int, size:int) -> bool or nil`
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int32_t b_wire_validwrite(struct bvm *vm);
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int32_t b_wire_validwrite(struct bvm *vm) {
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int32_t top = be_top(vm); // Get the number of arguments
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int32_t bus = getBus(vm) - 1; // 0 or 1
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if (top == 5 && be_isint(vm, 2) && be_isint(vm, 3) && be_isint(vm, 4) && be_isint(vm, 5)) {
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uint8_t addr = be_toint(vm, 2);
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uint8_t reg = be_toint(vm, 3);
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uint8_t val = be_toint(vm, 4);
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uint8_t size = be_toint(vm, 5);
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bool ok = I2cWrite(addr, reg, val, size, bus);
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be_pushbool(vm, ok);
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be_return(vm); // Return
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}
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be_raise(vm, kTypeError, nullptr);
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}
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// Berry: `read(address:int, reg:int, size:int) -> int or nil`
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int32_t b_wire_validread(struct bvm *vm);
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int32_t b_wire_validread(struct bvm *vm) {
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int32_t top = be_top(vm); // Get the number of arguments
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int32_t bus = getBus(vm) - 1; // 0 or 1
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if (top == 4 && be_isint(vm, 2) && be_isint(vm, 3) && be_isint(vm, 4)) {
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uint8_t addr = be_toint(vm, 2);
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uint8_t reg = be_toint(vm, 3);
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uint8_t size = be_toint(vm, 4);
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bool ok = I2cValidRead(addr, reg, size, bus); // TODO
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if (ok) {
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be_pushint(vm, i2c_buffer);
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} else {
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be_pushnil(vm);
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}
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be_return(vm); // Return
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}
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be_raise(vm, kTypeError, nullptr);
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}
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// Berry: `find(address:int) -> bool` true if device responds
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int32_t b_wire_detect(struct bvm *vm);
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int32_t b_wire_detect(struct bvm *vm) {
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int32_t top = be_top(vm); // Get the number of arguments
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TwoWire & myWire = getWire(vm);
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if (top == 2 && be_isint(vm, 2)) {
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uint8_t addr = be_toint(vm, 2);
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// check the presence of the device
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myWire.beginTransmission((uint8_t)addr);
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bool found = (0 == myWire.endTransmission());
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be_pushbool(vm, found);
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be_return(vm); // Return
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}
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be_raise(vm, kTypeError, nullptr);
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}
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// Berry: `enabled() -> bool` true if I2C bus is enabled
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int32_t b_wire_enabled(struct bvm *vm);
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int32_t b_wire_enabled(struct bvm *vm) {
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bool en = I2cEnabled(vm);
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be_pushbool(vm, en);
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be_return(vm);
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}
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}
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#endif // USE_I2C
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extern "C" {
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// Handle methods that require I2C to be enabled
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int32_t b_wire_i2cmissing(struct bvm *vm);
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int32_t b_wire_i2cmissing(struct bvm *vm) {
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be_raise(vm, "feature_error", "I2C is not enabled, use '#define USE_I2C'");
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}
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}
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#endif // USE_BERRY
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