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feat: 全量同步 254 个常用的 Arduino 扩展库文件

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2026-01-24 16:05:38 +08:00
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arduino-libs/arduino-cli/libraries/Adafruit_seesaw_Library/Adafruit_seesaw.cpp Normal file
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/*!
* @file Adafruit_seesaw.cpp
*
* @mainpage Adafruit seesaw arduino driver
*
* @section intro_sec Introduction
*
* This is part of Adafruit's seesaw driver for the Arduino platform. It is
* designed specifically to work with the Adafruit products that use seesaw
* technology.
*
* These chips use I2C to communicate, 2 pins (SCL+SDA) are required
* to interface with the board.
*
* Adafruit invests time and resources providing this open source code,
* please support Adafruit and open-source hardware by purchasing
* products from Adafruit!
*
* @section author Author
*
* Written by Dean Miller for Adafruit Industries.
*
* @section license License
*
* BSD license, all text here must be included in any redistribution.
*
*/
#include "Adafruit_seesaw.h"
//#define SEESAW_I2C_DEBUG
/*!
*****************************************************************************************
* @brief Create a seesaw object on a given I2C bus
*
* @param i2c_bus the I2C bus connected to the seesaw, defaults to "Wire"
****************************************************************************************/
Adafruit_seesaw::Adafruit_seesaw(TwoWire *i2c_bus) {
if (i2c_bus == NULL) {
_i2cbus = &Wire;
} else {
_i2cbus = i2c_bus;
}
}
/*!
*****************************************************************************************
* @brief Start the seesaw
*
* This should be called when your sketch is
*connecting to the seesaw
*
* @param addr the I2C address of the seesaw
* @param flow the flow control pin to use
* @param reset pass true to reset the seesaw on startup. Defaults
*to true.
*
* @return true if we could connect to the seesaw, false otherwise
****************************************************************************************/
bool Adafruit_seesaw::begin(uint8_t addr, int8_t flow, bool reset) {
_flow = flow;
if (_flow != -1)
::pinMode(_flow, INPUT);
if (_i2c_dev) {
delete _i2c_dev;
}
_i2c_dev = new Adafruit_I2CDevice(addr, _i2cbus);
bool found = false;
for (int retries = 0; retries < 10; retries++) {
if (_i2c_dev->begin()) {
found = true;
break;
}
delay(10);
}
if (!found) {
return false;
}
#ifdef SEESAW_I2C_DEBUG
Serial.println("Begun");
#endif
if (reset) {
found = false;
SWReset();
for (int retries = 0; retries < 10; retries++) {
if (_i2c_dev->detected()) {
found = true;
break;
}
delay(10);
}
}
if (!found) {
return false;
}
#ifdef SEESAW_I2C_DEBUG
Serial.println("Reset");
#endif
found = false;
for (int retries = 0; !found && retries < 10; retries++) {
uint8_t c = 0;
this->read(SEESAW_STATUS_BASE, SEESAW_STATUS_HW_ID, &c, 1);
if (c == SEESAW_HW_ID_CODE) {
found = true;
}
delay(10);
}
#ifdef SEESAW_I2C_DEBUG
Serial.println("Done!");
#endif
return found;
}
/*!
*******************************************************************
* @brief perform a software reset. This resets all seesaw registers to
*their default values.
* This is called automatically from
*Adafruit_seesaw.begin()
* @returns True on I2C write success, false otherwise
********************************************************************/
bool Adafruit_seesaw::SWReset() {
return this->write8(SEESAW_STATUS_BASE, SEESAW_STATUS_SWRST, 0xFF);
}
/*!
**************************************************************************
* @brief Returns the available options compiled into the seesaw firmware.
* @return the available options compiled into the seesaw firmware. If the
*option is included, the corresponding bit is set. For example, if the ADC
*module is compiled in then (ss.getOptions() & (1UL << SEESAW_ADC_BASE)) > 0
***********************************************************************/
uint32_t Adafruit_seesaw::getOptions() {
uint8_t buf[4];
this->read(SEESAW_STATUS_BASE, SEESAW_STATUS_OPTIONS, buf, 4);
uint32_t ret = ((uint32_t)buf[0] << 24) | ((uint32_t)buf[1] << 16) |
((uint32_t)buf[2] << 8) | (uint32_t)buf[3];
return ret;
}
/*!
*********************************************************************
* @brief Returns the version of the seesaw
* @return The version code. Bits [31:16] will be a date code, [15:0] will
*be the product id.
********************************************************************/
uint32_t Adafruit_seesaw::getVersion() {
uint8_t buf[4];
this->read(SEESAW_STATUS_BASE, SEESAW_STATUS_VERSION, buf, 4);
uint32_t ret = ((uint32_t)buf[0] << 24) | ((uint32_t)buf[1] << 16) |
((uint32_t)buf[2] << 8) | (uint32_t)buf[3];
return ret;
}
/*!
**************************************************************************
* @brief Set the mode of a GPIO pin.
*
* @param pin the pin number. On the SAMD09 breakout, this corresponds to
*the number on the silkscreen.
* @param mode the mode to set the pin. One of INPUT, OUTPUT, or
*INPUT_PULLUP.
************************************************************************/
void Adafruit_seesaw::pinMode(uint8_t pin, uint8_t mode) {
if (pin >= 32)
pinModeBulk(0, 1ul << (pin - 32), mode);
else
pinModeBulk(1ul << pin, mode);
}
/*!
***************************************************************************
* @brief Set the output of a GPIO pin
*
* @param pin the pin number. On the SAMD09 breakout, this corresponds to
*the number on the silkscreen.
* @param value the value to write to the GPIO pin. This should be
*HIGH or LOW.
***************************************************************************/
void Adafruit_seesaw::digitalWrite(uint8_t pin, uint8_t value) {
if (pin >= 32)
digitalWriteBulk(0, 1ul << (pin - 32), value);
else
digitalWriteBulk(1ul << pin, value);
}
/*!
****************************************************************************
* @brief Read the current status of a GPIO pin
*
* @param pin the pin number. On the SAMD09 breakout, this corresponds to
*the number on the silkscreen.
*
* @return the status of the pin. HIGH or LOW (1 or 0).
***********************************************************************/
bool Adafruit_seesaw::digitalRead(uint8_t pin) {
if (pin >= 32)
return digitalReadBulkB((1ul << (pin - 32))) != 0;
else
return digitalReadBulk((1ul << pin)) != 0;
}
/*!
****************************************************************************
* @brief read the status of multiple pins on port A.
*
* @param pins a bitmask of the pins to write. On the SAMD09 breakout,
*this corresponds to the number on the silkscreen. For example, passing 0b0110
*will return the values of pins 2 and 3.
*
* @return the status of the passed pins. If 0b0110 was passed and pin 2 is
*high and pin 3 is low, 0b0010 (decimal number 2) will be returned.
*******************************************************************/
uint32_t Adafruit_seesaw::digitalReadBulk(uint32_t pins) {
uint8_t buf[4];
this->read(SEESAW_GPIO_BASE, SEESAW_GPIO_BULK, buf, 4);
uint32_t ret = ((uint32_t)buf[0] << 24) | ((uint32_t)buf[1] << 16) |
((uint32_t)buf[2] << 8) | (uint32_t)buf[3];
return ret & pins;
}
/*!
**************************************************************************
* @brief read the status of multiple pins on port B.
*
* @param pins a bitmask of the pins to write.
*
* @return the status of the passed pins. If 0b0110 was passed and pin 2 is
*high and pin 3 is low, 0b0010 (decimal number 2) will be returned.
************************************************************************/
uint32_t Adafruit_seesaw::digitalReadBulkB(uint32_t pins) {
uint8_t buf[8];
this->read(SEESAW_GPIO_BASE, SEESAW_GPIO_BULK, buf, 8);
uint32_t ret = ((uint32_t)buf[4] << 24) | ((uint32_t)buf[5] << 16) |
((uint32_t)buf[6] << 8) | (uint32_t)buf[7];
return ret & pins;
}
/*!
**********************************************************************
* @brief Enable or disable GPIO interrupts on the passed pins
*
* @param pins a bitmask of the pins to write. On the SAMD09 breakout,
*this corresponds to the number on the silkscreen. For example, passing 0b0110
*will enable or disable interrups on pins 2 and 3.
* @param enabled pass true to enable the interrupts on the passed
*pins, false to disable the interrupts on the passed pins.
***********************************************************************/
void Adafruit_seesaw::setGPIOInterrupts(uint32_t pins, bool enabled) {
uint8_t cmd[] = {(uint8_t)(pins >> 24), (uint8_t)(pins >> 16),
(uint8_t)(pins >> 8), (uint8_t)pins};
if (enabled)
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_INTENSET, cmd, 4);
else
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_INTENCLR, cmd, 4);
}
/*!
****************************************************************
* @brief read the analog value on an ADC-enabled pin.
*
* @param pin the number of the pin to read. On the SAMD09 breakout, this
*corresponds to the number on the silkscreen. On the default seesaw firmware on
*the SAMD09 breakout, pins 2, 3, and 4 are ADC-enabled.
*
* @return the analog value. This is an integer between 0 and 1023
***********************************************************************/
uint16_t Adafruit_seesaw::analogRead(uint8_t pin) {
uint8_t buf[2];
uint8_t p;
switch (pin) {
case ADC_INPUT_0_PIN:
p = 0;
break;
case ADC_INPUT_1_PIN:
p = 1;
break;
case ADC_INPUT_2_PIN:
p = 2;
break;
case ADC_INPUT_3_PIN:
p = 3;
break;
default:
return 0;
break;
}
this->read(SEESAW_ADC_BASE, SEESAW_ADC_CHANNEL_OFFSET + p, buf, 2, 500);
uint16_t ret = ((uint16_t)buf[0] << 8) | buf[1];
delay(1);
return ret;
}
/*!
******************************************************************************
* @brief read the analog value on an capacitive touch-enabled pin.
*
* @param pin the number of the pin to read.
*
* @return the analog value. This is an integer between 0 and 1023
****************************************************************************/
uint16_t Adafruit_seesaw::touchRead(uint8_t pin) {
uint8_t buf[2];
uint8_t p = pin;
uint16_t ret = 65535;
for (uint8_t retry = 0; retry < 5; retry++) {
if (this->read(SEESAW_TOUCH_BASE, SEESAW_TOUCH_CHANNEL_OFFSET + p, buf, 2,
3000 + retry * 1000)) {
ret = ((uint16_t)buf[0] << 8) | buf[1];
break;
}
}
return ret;
}
/*!
***************************************************************************
* @brief set the mode of multiple GPIO pins at once.
*
* @param pins a bitmask of the pins to write. On the SAMD09 breakout,
*this corresponds to the number on the silkscreen. For example, passing 0b0110
*will set the mode of pins 2 and 3.
* @param mode the mode to set the pins to. One of INPUT, OUTPUT,
*or INPUT_PULLUP.
************************************************************************/
void Adafruit_seesaw::pinModeBulk(uint32_t pins, uint8_t mode) {
uint8_t cmd[] = {(uint8_t)(pins >> 24), (uint8_t)(pins >> 16),
(uint8_t)(pins >> 8), (uint8_t)pins};
switch (mode) {
case OUTPUT:
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_DIRSET_BULK, cmd, 4);
break;
case INPUT:
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_DIRCLR_BULK, cmd, 4);
break;
case INPUT_PULLUP:
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_DIRCLR_BULK, cmd, 4);
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_PULLENSET, cmd, 4);
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_BULK_SET, cmd, 4);
break;
case INPUT_PULLDOWN:
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_DIRCLR_BULK, cmd, 4);
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_PULLENSET, cmd, 4);
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_BULK_CLR, cmd, 4);
break;
}
}
/*!
*****************************************************************************************
* @brief set the mode of multiple GPIO pins at once. This supports both
*ports A and B.
*
* @param pinsa a bitmask of the pins to write on port A. On the SAMD09
*breakout, this corresponds to the number on the silkscreen. For example,
*passing 0b0110 will set the mode of pins 2 and 3.
* @param pinsb a bitmask of the pins to write on port B.
* @param mode the mode to set the pins to. One of INPUT, OUTPUT,
*or INPUT_PULLUP.
****************************************************************************************/
void Adafruit_seesaw::pinModeBulk(uint32_t pinsa, uint32_t pinsb,
uint8_t mode) {
uint8_t cmd[] = {(uint8_t)(pinsa >> 24), (uint8_t)(pinsa >> 16),
(uint8_t)(pinsa >> 8), (uint8_t)pinsa,
(uint8_t)(pinsb >> 24), (uint8_t)(pinsb >> 16),
(uint8_t)(pinsb >> 8), (uint8_t)pinsb};
switch (mode) {
case OUTPUT:
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_DIRSET_BULK, cmd, 8);
break;
case INPUT:
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_DIRCLR_BULK, cmd, 8);
break;
case INPUT_PULLUP:
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_DIRCLR_BULK, cmd, 8);
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_PULLENSET, cmd, 8);
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_BULK_SET, cmd, 8);
break;
case INPUT_PULLDOWN:
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_DIRCLR_BULK, cmd, 8);
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_PULLENSET, cmd, 8);
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_BULK_CLR, cmd, 8);
break;
}
}
/*!
*****************************************************************************************
* @brief write a value to multiple GPIO pins at once.
*
* @param pins a bitmask of the pins to write. On the SAMD09 breakout,
*this corresponds to the number on the silkscreen. For example, passing 0b0110
*will write the passed value to pins 2 and 3.
* @param value pass HIGH to set the output on the passed pins to
*HIGH, low to set the output on the passed pins to LOW.
****************************************************************************************/
void Adafruit_seesaw::digitalWriteBulk(uint32_t pins, uint8_t value) {
uint8_t cmd[] = {(uint8_t)(pins >> 24), (uint8_t)(pins >> 16),
(uint8_t)(pins >> 8), (uint8_t)pins};
if (value)
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_BULK_SET, cmd, 4);
else
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_BULK_CLR, cmd, 4);
}
/*!
*****************************************************************************************
* @brief write a value to multiple GPIO pins at once. This supports both
*ports A and B
*
* @param pinsa a bitmask of the pins to write on port A. On the SAMD09
*breakout, this corresponds to the number on the silkscreen. For example,
*passing 0b0110 will write the passed value to pins 2 and 3.
* @param pinsb a bitmask of the pins to write on port B.
* @param value pass HIGH to set the output on the passed pins to
*HIGH, low to set the output on the passed pins to LOW.
****************************************************************************************/
void Adafruit_seesaw::digitalWriteBulk(uint32_t pinsa, uint32_t pinsb,
uint8_t value) {
uint8_t cmd[] = {(uint8_t)(pinsa >> 24), (uint8_t)(pinsa >> 16),
(uint8_t)(pinsa >> 8), (uint8_t)pinsa,
(uint8_t)(pinsb >> 24), (uint8_t)(pinsb >> 16),
(uint8_t)(pinsb >> 8), (uint8_t)pinsb};
if (value)
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_BULK_SET, cmd, 8);
else
this->write(SEESAW_GPIO_BASE, SEESAW_GPIO_BULK_CLR, cmd, 8);
}
/*!
*****************************************************************************************
* @brief write a PWM value to a PWM-enabled pin
*
* @param pin the number of the pin to write. On the SAMD09 breakout, this
*corresponds to the number on the silkscreen. on the default seesaw firmware on
*the SAMD09 breakout, pins 5, 6, and 7 are PWM enabled.
* @param value the value to write to the pin
* @param width the width of the value to write. Defaults to 8. If
*16 is passed a 16 bit value will be written.
****************************************************************************************/
void Adafruit_seesaw::analogWrite(uint8_t pin, uint16_t value, uint8_t width) {
int8_t p = -1;
switch (pin) {
case PWM_0_PIN:
p = 0;
break;
case PWM_1_PIN:
p = 1;
break;
case PWM_2_PIN:
p = 2;
break;
case PWM_3_PIN:
p = 3;
break;
default:
break;
}
if (p > -1) {
if (width == 16) {
uint8_t cmd[] = {(uint8_t)p, (uint8_t)(value >> 8), (uint8_t)value};
this->write(SEESAW_TIMER_BASE, SEESAW_TIMER_PWM, cmd, 3);
} else {
uint16_t mappedVal = map(value, 0, 255, 0, 65535);
uint8_t cmd[] = {(uint8_t)p, (uint8_t)(mappedVal >> 8),
(uint8_t)mappedVal};
this->write(SEESAW_TIMER_BASE, SEESAW_TIMER_PWM, cmd, 3);
}
}
}
/*!
* @brief set the PWM frequency of a PWM-enabled pin. Note that on SAMD09,
* SAMD11 boards the frequency will be mapped to closest match
* fixed frequencies. Also note that PWM pins 4 and 5 share a
*timer, and PWM pins 6 and 7 share a timer. Changing the frequency for one pin
*will change the frequency for the other pin that is on the timer.
*
* @param pin the number of the pin to change frequency of. On the SAMD09
* breakout, this corresponds to the number on the silkscreen.
* on the default seesaw firmware on the SAMD09 breakout, pins 5,
*6, and 7 are PWM enabled.
* @param freq the frequency to set.
******************************************************************************/
void Adafruit_seesaw::setPWMFreq(uint8_t pin, uint16_t freq) {
int8_t p = -1;
switch (pin) {
case PWM_0_PIN:
p = 0;
break;
case PWM_1_PIN:
p = 1;
break;
case PWM_2_PIN:
p = 2;
break;
case PWM_3_PIN:
p = 3;
break;
default:
break;
}
if (p > -1) {
uint8_t cmd[] = {(uint8_t)p, (uint8_t)(freq >> 8), (uint8_t)freq};
this->write(SEESAW_TIMER_BASE, SEESAW_TIMER_FREQ, cmd, 3);
}
}
/*!
* @brief Enable the data ready interrupt on the passed sercom. Note that
*both the interrupt module and the passed sercom must be compiled into the
*seesaw firmware for this to function. If both of these things are true, the
*interrupt pin on the seesaw will fire when there is data to be read from the
*passed sercom. On the default seesaw firmeare on the SAMD09 breakout, no
*sercoms are enabled.
*
* @param sercom the sercom to enable the interrupt on.
****************************************************************************************/
void Adafruit_seesaw::enableSercomDataRdyInterrupt(uint8_t sercom) {
_sercom_inten.bit.DATA_RDY = 1;
this->write8(SEESAW_SERCOM0_BASE + sercom, SEESAW_SERCOM_INTEN,
_sercom_inten.reg);
}
/*!
***************************************************************************************
* @brief Disable the data ready interrupt on the passed sercom.
*
* @param sercom the sercom to disable the interrupt on.
****************************************************************************************/
void Adafruit_seesaw::disableSercomDataRdyInterrupt(uint8_t sercom) {
_sercom_inten.bit.DATA_RDY = 0;
this->write8(SEESAW_SERCOM0_BASE + sercom, SEESAW_SERCOM_INTEN,
_sercom_inten.reg);
}
/*!
*****************************************************************************************
* @brief Reads a character from the passed sercom if one is available.
*Note that on the default seesaw firmware on the SAMD09 breakout no sercoms are
*enabled.
*
* @param sercom the sercom to read data from.
* @returns One byte of data
****************************************************************************************/
char Adafruit_seesaw::readSercomData(uint8_t sercom) {
return this->read8(SEESAW_SERCOM0_BASE + sercom, SEESAW_SERCOM_DATA);
}
/*!
*****************************************************************************************
* @brief Set the seesaw I2C address. This will automatically call
*Adafruit_seesaw.begin() with the new address.
*
* @param addr the new address for the seesaw. This must be a valid 7 bit
*I2C address.
****************************************************************************************/
void Adafruit_seesaw::setI2CAddr(uint8_t addr) {
this->EEPROMWrite8(SEESAW_EEPROM_I2C_ADDR, addr);
delay(250);
this->begin(addr); // restart w/ the new addr
}
/*!
*****************************************************************************************
* @brief Read the I2C address of the seesaw
*
* @return the 7 bit I2C address of the seesaw... which you probably
*already know because you just read data from it.
****************************************************************************************/
uint8_t Adafruit_seesaw::getI2CAddr() {
return this->read8(SEESAW_EEPROM_BASE, SEESAW_EEPROM_I2C_ADDR);
}
/*!
*****************************************************************************************
* @brief Write a 1 byte to an EEPROM address
*
* @param addr the address to write to. On the default seesaw firmware on
*the SAMD09 breakout this is between 0 and 63.
* @param val to write between 0 and 255
****************************************************************************************/
void Adafruit_seesaw::EEPROMWrite8(uint8_t addr, uint8_t val) {
this->EEPROMWrite(addr, &val, 1);
}
/*!
*****************************************************************************************
* @brief write a string of bytes to EEPROM starting at the passed address
*
* @param addr the starting address to write the first byte. This will be
*automatically incremented with each byte written.
* @param buf the buffer of bytes to be written.
* @param size the number of bytes to write. Writing past the end
*of available EEPROM may result in undefined behavior.
****************************************************************************************/
void Adafruit_seesaw::EEPROMWrite(uint8_t addr, uint8_t *buf, uint8_t size) {
this->write(SEESAW_EEPROM_BASE, addr, buf, size);
}
/*!
*****************************************************************************************
* @brief Read 1 byte from the specified EEPROM address.
*
* @param addr the address to read from. One the default seesaw firmware
*on the SAMD09 breakout this is between 0 and 63.
*
* @return the value between 0 and 255 that was read from the passed
*address.
****************************************************************************************/
uint8_t Adafruit_seesaw::EEPROMRead8(uint8_t addr) {
return this->read8(SEESAW_EEPROM_BASE, addr);
}
/*!
*****************************************************************************************
* @brief Set the baud rate on SERCOM0.
*
* @param baud the baud rate to set. This is an integer value. Baud rates
*up to 115200 are supported.
****************************************************************************************/
void Adafruit_seesaw::UARTSetBaud(uint32_t baud) {
uint8_t cmd[] = {(uint8_t)(baud >> 24), (uint8_t)(baud >> 16),
(uint8_t)(baud >> 8), (uint8_t)baud};
this->write(SEESAW_SERCOM0_BASE, SEESAW_SERCOM_BAUD, cmd, 4);
}
/*!
*****************************************************************************************
* @brief activate or deactivate a key and edge on the keypad module
*
* @param key the key number to activate
* @param edge the edge to trigger on
* @param enable passing true will enable the passed event,
*passing false will disable it.
****************************************************************************************/
void Adafruit_seesaw::setKeypadEvent(uint8_t key, uint8_t edge, bool enable) {
keyState ks;
ks.bit.STATE = enable;
ks.bit.ACTIVE = (1 << edge);
uint8_t cmd[] = {key, ks.reg};
this->write(SEESAW_KEYPAD_BASE, SEESAW_KEYPAD_EVENT, cmd, 2);
}
/**
*****************************************************************************************
* @brief enable the keypad interrupt that fires when events are in the
*fifo.
****************************************************************************************/
void Adafruit_seesaw::enableKeypadInterrupt() {
this->write8(SEESAW_KEYPAD_BASE, SEESAW_KEYPAD_INTENSET, 0x01);
}
/**
*****************************************************************************************
* @brief disable the keypad interrupt that fires when events are in the
*fifo.
****************************************************************************************/
void Adafruit_seesaw::disableKeypadInterrupt() {
this->write8(SEESAW_KEYPAD_BASE, SEESAW_KEYPAD_INTENCLR, 0x01);
}
/**
*****************************************************************************************
* @brief Get the number of events currently in the fifo
* @return the number of events in the fifo
****************************************************************************************/
uint8_t Adafruit_seesaw::getKeypadCount() {
return this->read8(SEESAW_KEYPAD_BASE, SEESAW_KEYPAD_COUNT, 500);
}
/**
*****************************************************************************************
* @brief Read all keyEvents into the passed buffer
*
* @param buf pointer to where the keyEvents should be stored
* @param count the number of events to read
* @returns True on I2C read success
****************************************************************************************/
bool Adafruit_seesaw::readKeypad(keyEventRaw *buf, uint8_t count) {
return this->read(SEESAW_KEYPAD_BASE, SEESAW_KEYPAD_FIFO, (uint8_t *)buf,
count, 1000);
}
/**
*****************************************************************************************
* @brief Read the temperature of the seesaw board in degrees Celsius.
*NOTE: not all seesaw firmwares have the temperature sensor enabled.
* @return Temperature in degrees Celsius as a floating point value.
****************************************************************************************/
float Adafruit_seesaw::getTemp() {
uint8_t buf[4];
this->read(SEESAW_STATUS_BASE, SEESAW_STATUS_TEMP, buf, 4, 1000);
int32_t ret = ((uint32_t)buf[0] << 24) | ((uint32_t)buf[1] << 16) |
((uint32_t)buf[2] << 8) | (uint32_t)buf[3];
return (1.0 / (1UL << 16)) * ret;
}
/**
*****************************************************************************************
* @brief Read the current position of the encoder
* @param encoder Which encoder to use, defaults to 0
* @return The encoder position as a 32 bit signed integer.
****************************************************************************************/
int32_t Adafruit_seesaw::getEncoderPosition(uint8_t encoder) {
uint8_t buf[4];
this->read(SEESAW_ENCODER_BASE, SEESAW_ENCODER_POSITION + encoder, buf, 4);
int32_t ret = ((uint32_t)buf[0] << 24) | ((uint32_t)buf[1] << 16) |
((uint32_t)buf[2] << 8) | (uint32_t)buf[3];
return ret;
}
/**
*****************************************************************************************
* @brief Set the current position of the encoder
* @param encoder Which encoder to use, defaults to 0
* @param pos the position to set the encoder to.
****************************************************************************************/
void Adafruit_seesaw::setEncoderPosition(int32_t pos, uint8_t encoder) {
uint8_t buf[] = {(uint8_t)(pos >> 24), (uint8_t)(pos >> 16),
(uint8_t)(pos >> 8), (uint8_t)(pos & 0xFF)};
this->write(SEESAW_ENCODER_BASE, SEESAW_ENCODER_POSITION + encoder, buf, 4);
}
/**
*****************************************************************************************
* @brief Read the change in encoder position since it was last read.
* @param encoder Which encoder to use, defaults to 0
* @return The encoder change as a 32 bit signed integer.
****************************************************************************************/
int32_t Adafruit_seesaw::getEncoderDelta(uint8_t encoder) {
uint8_t buf[4];
this->read(SEESAW_ENCODER_BASE, SEESAW_ENCODER_DELTA + encoder, buf, 4);
int32_t ret = ((uint32_t)buf[0] << 24) | ((uint32_t)buf[1] << 16) |
((uint32_t)buf[2] << 8) | (uint32_t)buf[3];
return ret;
}
/**
*****************************************************************************************
* @brief Enable the interrupt to fire when the encoder changes position.
* @param encoder Which encoder to use, defaults to 0
* @returns True on I2C write success
****************************************************************************************/
bool Adafruit_seesaw::enableEncoderInterrupt(uint8_t encoder) {
return this->write8(SEESAW_ENCODER_BASE, SEESAW_ENCODER_INTENSET + encoder,
0x01);
}
/**
*****************************************************************************************
* @brief Disable the interrupt from firing when the encoder changes
*position.
* @param encoder Which encoder to use, defaults to 0
* @returns True on I2C write success
****************************************************************************************/
bool Adafruit_seesaw::disableEncoderInterrupt(uint8_t encoder) {
return this->write8(SEESAW_ENCODER_BASE, SEESAW_ENCODER_INTENCLR + encoder,
0x01);
}
/**
*****************************************************************************************
* @brief Write 1 byte to the specified seesaw register.
*
* @param regHigh the module address register (ex. SEESAW_NEOPIXEL_BASE)
* @param regLow the function address register (ex.
*SEESAW_NEOPIXEL_PIN)
* @param value the value between 0 and 255 to write
* @returns True on I2C write success
****************************************************************************************/
bool Adafruit_seesaw::write8(byte regHigh, byte regLow, byte value) {
return this->write(regHigh, regLow, &value, 1);
}
/**
*****************************************************************************************
* @brief read 1 byte from the specified seesaw register.
*
* @param regHigh the module address register (ex. SEESAW_STATUS_BASE)
* @param regLow the function address register (ex.
*SEESAW_STATUS_VERSION)
* @param delay a number of microseconds to delay before reading
*out the data. Different delay values may be necessary to ensure the seesaw
*chip has time to process the requested data. Defaults to 125.
*
* @return the value between 0 and 255 read from the passed register
****************************************************************************************/
uint8_t Adafruit_seesaw::read8(byte regHigh, byte regLow, uint16_t delay) {
uint8_t ret;
this->read(regHigh, regLow, &ret, 1, delay);
return ret;
}
/**
*****************************************************************************************
* @brief Read a specified number of bytes into a buffer from the seesaw.
*
* @param regHigh the module address register (ex. SEESAW_STATUS_BASE)
* @param regLow the function address register (ex.
*SEESAW_STATUS_VERSION)
* @param buf the buffer to read the bytes into
* @param num the number of bytes to read.
* @param delay an optional delay in between setting the read
*register and reading out the data. This is required for some seesaw functions
*(ex. reading ADC data)
* @returns True on I2C read success
****************************************************************************************/
bool Adafruit_seesaw::read(uint8_t regHigh, uint8_t regLow, uint8_t *buf,
uint8_t num, uint16_t delay) {
uint8_t pos = 0;
uint8_t prefix[2];
prefix[0] = (uint8_t)regHigh;
prefix[1] = (uint8_t)regLow;
// on arduino we need to read in 32 byte chunks
while (pos < num) {
uint8_t read_now = min(32, num - pos);
if (_flow != -1) {
while (!::digitalRead(_flow))
yield();
}
if (!_i2c_dev->write(prefix, 2)) {
return false;
}
// TODO: tune this
delayMicroseconds(delay);
if (_flow != -1) {
while (!::digitalRead(_flow))
yield();
}
#ifdef SEESAW_I2C_DEBUG
Serial.print("Reading ");
Serial.print(read_now);
Serial.println(" bytes");
#endif
if (!_i2c_dev->read(buf + pos, read_now)) {
return false;
}
pos += read_now;
#ifdef SEESAW_I2C_DEBUG
Serial.print("pos: ");
Serial.print(pos);
Serial.print(" num:");
Serial.println(num);
#endif
}
return true;
}
/*!
*****************************************************************************************
* @brief Write a specified number of bytes to the seesaw from the passed
*buffer.
*
* @param regHigh the module address register (ex. SEESAW_GPIO_BASE)
* @param regLow the function address register (ex. SEESAW_GPIO_BULK_SET)
* @param buf the buffer the the bytes from
* @param num the number of bytes to write.
* @returns True on I2C write success
****************************************************************************************/
bool Adafruit_seesaw::write(uint8_t regHigh, uint8_t regLow,
uint8_t *buf = NULL, uint8_t num = 0) {
uint8_t prefix[2];
prefix[0] = (uint8_t)regHigh;
prefix[1] = (uint8_t)regLow;
if (_flow != -1)
while (!::digitalRead(_flow))
yield();
if (!_i2c_dev->write(buf, num, true, prefix, 2)) {
return false;
}
return true;
}
/*!
*****************************************************************************************
* @brief The print wrapper for the seesaw class. Calling this allows you
*to use ss.print() or ss.println() and write to the UART on SERCOM0 of the
*seesaw. Note that this functionality is only available when the UART (sercom)
*module is compiled into the seesaw firmware. On the default seesaw firmware on
*the SAMD09 breakout this functionality is not available.
*
* @param character the character to write.
* @returns The number of bytes written (1)
****************************************************************************************/
size_t Adafruit_seesaw::write(uint8_t character) {
// TODO: add support for multiple sercoms
this->write8(SEESAW_SERCOM0_BASE, SEESAW_SERCOM_DATA, character);
delay(1); // TODO: this can be optimized... it's only needed for longer writes
return 1;
}
/*!
************************************************************************
* @brief The print wrapper for the seesaw class allowing the user to
*print a string. Calling this allows you to use ss.print() or ss.println() and
*write to the UART on SERCOM0 of the seesaw. Note that this functionality is
*only available when the UART (sercom) module is compiled into the seesaw
*firmware. On the default seesaw firmware on the SAMD09 breakout this
*functionality is not available.
*
* @param str the string to write
* @return number of bytes written (not including trailing 0)
*********************************************************************/
size_t Adafruit_seesaw::write(const char *str) {
uint8_t buf[32];
uint8_t len = 0;
while (*str) {
buf[len] = *str;
str++;
len++;
}
this->write(SEESAW_SERCOM0_BASE, SEESAW_SERCOM_DATA, buf, len);
return len;
}