wolfv6
7 years ago
5 changed files with 31 additions and 8 deletions
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doc/CHANGELOG.md
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| keybrd version 0.x.x is for initial development. | keybrd version 0.x.x is for initial development. | ||||
| keybrd version 1.0.0 will be released when the public API is stable. | keybrd version 1.0.0 will be released when the public API is stable. | ||||
| 0.6.4 (2016-11-16) | |||||
| ------------------ | |||||
| * Enhancements | |||||
| * add Port_MCP23018 | |||||
| * add Port_MCP23S18 | |||||
| * add Port_ShiftRegs | |||||
| * add PortWriteInterface | |||||
| * add add LED_PortOpenDrain | |||||
| * add examples/IOE_PCA9655E_development/ | |||||
| * rename strobeOn to activeState | |||||
| * move strobe logic from Port_*::write() to Scanner_IOE::scan() | |||||
| * Backward incompatible changes | |||||
| * rename print_microseconds_per_scan() to printMicrosecondsPerScan() | |||||
| * rename print_scans_per_second() to printScansPerSecond() | |||||
| * rename Scanner_ShiftRegsPISOSingleRow to Scanner_ShiftRegsRead | |||||
| * rename Scanner_ShiftRegsPISOMultiRow to Scanner_ShiftRegsReadStrobed | |||||
| * in Scanner_ShiftRegsReadStrobed, reverse slaveSelect HIGH/LOW for SPI compatible tri-state | |||||
| * in Port_MCP23S17, add slaveSelect to constructor parameter | |||||
| * in Port_*, replace write() with writeHigh() and writeLow() | |||||
| 0.6.3 (2016-10-06) | 0.6.3 (2016-10-06) | ||||
| ------------------ | ------------------ | ||||
| * Enhancements | * Enhancements |
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examples/IOE_PCA9655E_development/README.md
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| The series of sketches in this folder where used to develope the Port_PCA9655E class. | |||||
| The series of sketches in this folder where used to develop the Port_PCA9655E class in stages. | |||||
| The folder numbers are ordered from fundamental to practical. | The folder numbers are ordered from fundamental to practical. | ||||
| Each sketch was tested on a breadboard. Breadboards hold: | Each sketch was tested on a breadboard. Breadboards hold: |
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src/Port_MCP23017.cpp
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| { | { | ||||
| uint8_t pullUp; //bits, GPPU 0=pull-up disabled, 1=pull-up enabled | uint8_t pullUp; //bits, GPPU 0=pull-up disabled, 1=pull-up enabled | ||||
| if (activeState == LOW) //if active low | |||||
| if (activeState == LOW) //if active low | |||||
| { | { | ||||
| pullUp = readPins; //0=pull-up disabled (for LED), 1=pull-up enabled (for read) | pullUp = readPins; //0=pull-up disabled (for LED), 1=pull-up enabled (for read) | ||||
| } | } | ||||
| else //if active high | else //if active high | ||||
| { | { | ||||
| pullUp = 0; //0=pull-up disabled (for external pull-down resistors) | |||||
| pullUp = 0; //0=pull-up disabled (external pull-down resistors) | |||||
| } | } | ||||
| Wire.beginTransmission(deviceAddr); | Wire.beginTransmission(deviceAddr); | ||||
| */ | */ | ||||
| void Port_MCP23017::writeLow(const uint8_t pin) | void Port_MCP23017::writeLow(const uint8_t pin) | ||||
| { | { | ||||
| outputVal &= ~pin; //set pin output to low | |||||
| outputVal &= ~pin; //set pin output to low | |||||
| Wire.beginTransmission(deviceAddr); | Wire.beginTransmission(deviceAddr); | ||||
| Wire.write(portNum + 0x12); //GPIO | Wire.write(portNum + 0x12); //GPIO | ||||
| { | { | ||||
| Wire.beginTransmission(deviceAddr); | Wire.beginTransmission(deviceAddr); | ||||
| Wire.write(portNum + 0x12); //GPIO | Wire.write(portNum + 0x12); //GPIO | ||||
| Wire.endTransmission(false); //MCP23017 needs false to send a restart ??todo really? | |||||
| Wire.endTransmission(false); //MCP23017 needs false to send a restart | |||||
| Wire.requestFrom(deviceAddr, 1u); //request one byte from input port | Wire.requestFrom(deviceAddr, 1u); //request one byte from input port | ||||
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tutorials/keybrd_5b_LED_on_IOE/keybrd_5b_LED_on_IOE.ino
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| // --------------- RIGHT SCANNER --------------- | // --------------- RIGHT SCANNER --------------- | ||||
| const uint8_t IOE_ADDR = 0x20; //MCP23S17 address, all 3 ADDR pins are grounded | const uint8_t IOE_ADDR = 0x20; //MCP23S17 address, all 3 ADDR pins are grounded | ||||
| const uint8_t slaveSelect = 10; | |||||
| const uint8_t slaveSelect = 10; //Arduino-pin number connected to MCP23S17 CS or SS | |||||
| Port_MCP23S17 portA(slaveSelect , IOE_ADDR, 0, 1<<0 | 1<<1 ); //for read | Port_MCP23S17 portA(slaveSelect , IOE_ADDR, 0, 1<<0 | 1<<1 ); //for read | ||||
| Port_MCP23S17 portB(slaveSelect , IOE_ADDR, 1, 0); //for strobe | Port_MCP23S17 portB(slaveSelect , IOE_ADDR, 1, 0); //for strobe | ||||
| void setup() | void setup() | ||||
| { | { | ||||
| scanner_R.begin(); | scanner_R.begin(); | ||||
| layerState.begin(); //todo call LayerState_LED::begin() after Scanner_IOE::begin() | |||||
| layerState.begin(); //call LayerState_LED::begin() after Scanner_IOE::begin() | |||||
| } | } | ||||
| void loop() | void loop() |
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tutorials/tutorial_10_writing_IOE_port_classes.md
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| 5. Study other keybrd port classes. | 5. Study other keybrd port classes. | ||||
| * SPI I/O expander port classes: Port_MCP23S17 | * SPI I/O expander port classes: Port_MCP23S17 | ||||
| * I2C I/O expander port classes: Port_PCA9655E | * I2C I/O expander port classes: Port_PCA9655E | ||||
| 6. Write the port classes for your I/O expander. Debugging I/O expander code is hard because | |||||
| 6. Write the port classes for your I/O expander. | |||||
| * [Example](../examples/IOE_PCA9655E_development/) shows how Port_PCA9655E was developed in stages, from fundamental to practical | |||||
| * Debugging I/O expander code is hard because | |||||
| SPI or I2C protocol, expander configuration, and expander commands. | SPI or I2C protocol, expander configuration, and expander commands. | ||||
| <br> | <br> |