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Data Structures | Variables
Drivers

Data Structures

class  AnalogIn
 An analog input, used for reading the voltage on a pin. More...
 
class  AnalogOut
 An analog output, used for setting the voltage on a pin. More...
 
class  BusIn
 A digital input bus, used for reading the state of a collection of pins. More...
 
class  BusInOut
 A digital input output bus, used for setting the state of a collection of pins. More...
 
class  BusOut
 A digital output bus, used for setting the state of a collection of pins. More...
 
class  CANMessage
 CANMessage class. More...
 
class  CAN
 A can bus client, used for communicating with can devices. More...
 
class  DigitalIn
 A digital input, used for reading the state of a pin. More...
 
class  DigitalInOut
 A digital input/output, used for setting or reading a bi-directional pin. More...
 
class  DigitalOut
 A digital output, used for setting the state of a pin. More...
 
class  Ethernet
 An ethernet interface, to use with the ethernet pins. More...
 
class  FlashIAP
 Flash IAP driver. More...
 
class  I2C
 An I2C Master, used for communicating with I2C slave devices. More...
 
class  I2CSlave
 An I2C Slave, used for communicating with an I2C Master device. More...
 
class  InterruptIn
 A digital interrupt input, used to call a function on a rising or falling edge. More...
 
class  InterruptManager
 Use this singleton if you need to chain interrupt handlers. More...
 
class  LowPowerTicker
 Low Power Ticker. More...
 
class  LowPowerTimeout
 Low Power Timout. More...
 
class  LowPowerTimer
 Low power timer. More...
 
class  MbedCRC< polynomial, width >
 
class  PortIn
 A multiple pin digital input. More...
 
class  PortInOut
 A multiple pin digital in/out used to set/read multiple bi-directional pins. More...
 
class  PortOut
 A multiple pin digital output. More...
 
class  PwmOut
 A pulse-width modulation digital output. More...
 
class  QSPI
 A QSPI Driver, used for communicating with QSPI slave devices. More...
 
class  RawSerial
 A serial port (UART) for communication with other serial devices This is a variation of the Serial class that doesn't use streams, thus making it safe to use in interrupt handlers with the RTOS. More...
 
class  Serial
 A serial port (UART) for communication with other serial devices. More...
 
class  SerialBase
 A base class for serial port implementations Can't be instantiated directly (use Serial or RawSerial) More...
 
class  SPI
 A SPI Master, used for communicating with SPI slave devices. More...
 
class  SPISlave
 A SPI slave, used for communicating with a SPI master device. More...
 
class  Ticker
 A Ticker is used to call a function at a recurring interval. More...
 
class  Timeout
 A Timeout is used to call a function at a point in the future. More...
 
class  TimerEvent
 Base abstraction for timer interrupts. More...
 
class  UARTSerial
 Class providing buffered UART communication functionality using separate circular buffer for send and receive channels. More...
 
class  DeviceKey
 Use this singleton if you need to derive a new key from the device root of trust. More...
 

Variables

SingletonPtr< PlatformMutexmbed_crc_mutex
 CRC object provides CRC generation through hardware/software. More...
 

Detailed Description

Variable Documentation

SingletonPtr<PlatformMutex> mbed_crc_mutex

CRC object provides CRC generation through hardware/software.

ROM polynomial tables for supported polynomials (:: crc_polynomial_t) will be used for software CRC computation, if ROM tables are not available then CRC is computed runtime bit by bit for all data input.

Note
Synchronization level: Thread safe
Template Parameters
polynomialCRC polynomial value in hex
widthCRC polynomial width

Example: Compute CRC data

#include "mbed.h"
int main() {
MbedCRC<POLY_32BIT_ANSI, 32> ct;
char test[] = "123456789";
uint32_t crc = 0;
printf("\nPolynomial = 0x%lx Width = %d \n", ct.get_polynomial(), ct.get_width());
ct.compute((void *)test, strlen((const char*)test), &crc);
printf("The CRC of data \"123456789\" is : 0x%lx\n", crc);
return 0;
}

Example: Compute CRC with data available in parts

#include "mbed.h"
int main() {
MbedCRC<POLY_32BIT_ANSI, 32> ct;
char test[] = "123456789";
uint32_t crc = 0;
printf("\nPolynomial = 0x%lx Width = %d \n", ct.get_polynomial(), ct.get_width());
ct.compute_partial_start(&crc);
ct.compute_partial((void *)&test, 4, &crc);
ct.compute_partial((void *)&test[4], 5, &crc);
ct.compute_partial_stop(&crc);
printf("The CRC of data \"123456789\" is : 0x%lx\n", crc);
return 0;
}
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