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Minifigure SAM
Sam DEV
HACK-HackAday Cortex Kit
Developed on Hackaday : HaDge update – it’s a HACK
LEMSv2
MakerNet
Aliexpress
SAMD21 M0. 32-bit ARM Cortex M0 core. kompatibel mit Arduino Null, Arduino M0. Form R3.
SAMD21 M0-Mini. 32-bit ARM Cortex M0 core. Pins Abgelötet. kompatibel mit Arduino Null, Arduino M0. Form Mini.
Arduino Zero for dummies
Library
github.com/adafruit/Adafruit_ASFcore: ASF core files for Zero
Debugging
Proper Debugging of ATSAMD21 Processors
I2C
Adding more Serial Interfaces to SAMD microcontrollers (SERCOM) (VERX USEFUL!)
Wire lib hangs when scanning i2c in Wire.endTransmission()
Timer
AMD21 Timer library for the SAM15x15 and Arduino Zero
Arduino ZERO timer interrupts
happy wrappers for TC modules 3,4,5 on SAMD21
github.com/nebs/arduino-zero-timer-demo: A simple demo of the Arduino Zero timer frequency being smoothly changed in real time.
github.com/maxbader/arduino_tools: Arduino libraries and samples
Code
/c/Users/bachman0/AppData/Local/Arduino15 /c/Users/bachman0/Documents/Arduino/libraries/
C:\Users\bachman0\AppData\Local\Arduino15\packages\arduino\hardware\samd\1.6.12\cores\arduino\main.cpp
/c/Users/bachman0/AppData/Local/Arduino15/packages/arduino/hardware/samd/1.6.12/cores/arduino/main.cpp
/*
* \brief Main entry point of Arduino application
*/
int main( void )
{
init();
__libc_init_array();
initVariant();
delay(1);
#if defined(USBCON)
USBDevice.init();
USBDevice.attach();
#endif
setup();
for (;;)
{
loop();
if (serialEventRun) serialEventRun();
}
return 0;
}
C:\Users\bachman0\AppData\Local\Arduino15\packages\arduino\hardware\samd\1.6.12
cores\arduino\cortex_handlers.c
/* Exception Table */
__attribute__ ((section(".isr_vector"))) const DeviceVectors exception_table =
{
/* Configure Initial Stack Pointer, using linker-generated symbols */
(void*) (&__StackTop),
(void*) Reset_Handler,
(void*) NMI_Handler,
(void*) HardFault_Handler,
(void*) (0UL), /* Reserved */
(void*) (0UL), /* Reserved */
(void*) (0UL), /* Reserved */
(void*) (0UL), /* Reserved */
(void*) (0UL), /* Reserved */
(void*) (0UL), /* Reserved */
(void*) (0UL), /* Reserved */
(void*) SVC_Handler,
(void*) (0UL), /* Reserved */
(void*) (0UL), /* Reserved */
(void*) PendSV_Handler,
(void*) SysTick_Handler,
/* Configurable interrupts */
(void*) PM_Handler, /* 0 Power Manager */
(void*) SYSCTRL_Handler, /* 1 System Control */
(void*) WDT_Handler, /* 2 Watchdog Timer */
(void*) RTC_Handler, /* 3 Real-Time Counter */
(void*) EIC_Handler, /* 4 External Interrupt Controller */
(void*) NVMCTRL_Handler, /* 5 Non-Volatile Memory Controller */
(void*) DMAC_Handler, /* 6 Direct Memory Access Controller */
(void*) USB_Handler, /* 7 Universal Serial Bus */
(void*) EVSYS_Handler, /* 8 Event System Interface */
(void*) SERCOM0_Handler, /* 9 Serial Communication Interface 0 */
(void*) SERCOM1_Handler, /* 10 Serial Communication Interface 1 */
(void*) SERCOM2_Handler, /* 11 Serial Communication Interface 2 */
(void*) SERCOM3_Handler, /* 12 Serial Communication Interface 3 */
(void*) SERCOM4_Handler, /* 13 Serial Communication Interface 4 */
(void*) SERCOM5_Handler, /* 14 Serial Communication Interface 5 */
(void*) TCC0_Handler, /* 15 Timer Counter Control 0 */
(void*) TCC1_Handler, /* 16 Timer Counter Control 1 */
(void*) TCC2_Handler, /* 17 Timer Counter Control 2 */
(void*) TC3_Handler, /* 18 Basic Timer Counter 0 */
(void*) TC4_Handler, /* 19 Basic Timer Counter 1 */
(void*) TC5_Handler, /* 20 Basic Timer Counter 2 */
(void*) TC6_Handler, /* 21 Basic Timer Counter 3 */
(void*) TC7_Handler, /* 22 Basic Timer Counter 4 */
(void*) ADC_Handler, /* 23 Analog Digital Converter */
(void*) AC_Handler, /* 24 Analog Comparators */
(void*) DAC_Handler, /* 25 Digital Analog Converter */
(void*) PTC_Handler, /* 26 Peripheral Touch Controller */
(void*) I2S_Handler, /* 27 Inter-IC Sound Interface */
(void*) (0UL), /* Reserved */
};
digitalRead()
Arduino15/packages/arduino/hardware/samd/1.6.12/cores/arduino/wiring_digital.c:int digitalRead( uint32_t ulPin )
Arduino15/packages/arduino/hardware/samd/1.6.12/cores/arduino/wiring_digital.h:extern int digitalRead( uint32_t ulPin ) ;
millis()
Arduino15/packages/arduino/hardware/samd/1.6.12/cores/arduino/delay.c:uint32_t millis( void )
Arduino15/packages/arduino/hardware/samd/1.6.12/cores/arduino/delay.h:extern uint32_t millis( void ) ;
yield()
Arduino15/packages/arduino/hardware/samd/1.6.12/cores/arduino/Arduino.h:void yield( void ) ;
Arduino15/packages/arduino/hardware/samd/1.6.12/cores/arduino/hooks.c:void yield(void) __attribute__ ((weak, alias("__empty")));
dtostrf()
Arduino15/packages/arduino/hardware/samd/1.6.12/cores/arduino/avr/dtostrf.c:char *dtostrf (double val, signed char width, unsigned char prec, char *sout) {
Arduino15/packages/arduino/hardware/samd/1.6.12/cores/arduino/avr/dtostrf.h:char *dtostrf(double val, signed char width, unsigned char prec, char *sout);
String / StringObject
Arduino15/packages/arduino/hardware/samd/1.6.12/cores/arduino/WString.cpp:String::String(const char *cstr)
Arduino15/packages/arduino/hardware/samd/1.6.12/cores/arduino/WString.h:class String
Stream::readStringUntil() Arduino15/packages/arduino/hardware/samd/1.6.12/cores/arduino/Stream.cpp:String Stream::readStringUntil(char terminator) Arduino15/packages/arduino/hardware/samd/1.6.12/cores/arduino/Stream.h: String readStringUntil(char terminator);
C:\Users\bachman0\AppData\Local\Arduino15\packages\arduino\hardware\samd\1.6.12 cores\arduino\SERCOM.h
/c/Users/bachman0/AppData/Local/Arduino15/packages/arduino/hardware/samd/1.6.12/libraries/Wire
TwoWire::TwoWire(SERCOM * s, uint8_t pinSDA, uint8_t pinSCL)
{
this->sercom = s;
this->_uc_pinSDA=pinSDA;
this->_uc_pinSCL=pinSCL;
transmissionBegun = false;
}
void TwoWire::begin(void) {
//Master Mode
sercom->initMasterWIRE(TWI_CLOCK);
sercom->enableWIRE();
pinPeripheral(_uc_pinSDA, g_APinDescription[_uc_pinSDA].ulPinType);
pinPeripheral(_uc_pinSCL, g_APinDescription[_uc_pinSCL].ulPinType);
}
void TwoWire::begin(uint8_t address) {
//Slave mode
sercom->initSlaveWIRE(address);
sercom->enableWIRE();
pinPeripheral(_uc_pinSDA, g_APinDescription[_uc_pinSDA].ulPinType);
pinPeripheral(_uc_pinSCL, g_APinDescription[_uc_pinSCL].ulPinType);
}
void (*onReceiveCallback)(int);
void TwoWire::onService(void)
void SERCOM3_Handler(void); // Interrupt Handler
#if WIRE_INTERFACES_COUNT > 0
/* In case new variant doesn't define these macros,
* we put here the ones for Arduino Zero.
*
* These values should be different on some variants!
*/
#ifndef PERIPH_WIRE
#define PERIPH_WIRE sercom3
#define WIRE_IT_HANDLER SERCOM3_Handler
#endif // PERIPH_WIRE
TwoWire Wire(&PERIPH_WIRE, PIN_WIRE_SDA, PIN_WIRE_SCL);
void WIRE_IT_HANDLER(void) {
Wire.onService();
}
#endif
/c/Program\ Files\ \(x86\)/Arduino/libraries/SD
File
Arduino/libraries/SD/src/File.cpp:File::File(SdFile f, const char *n)
Arduino/libraries/SD/src/SD.h:class File : public Stream
File::openNextFile
Arduino/libraries/SD/src/SD.cpp:File File::openNextFile(uint8_t mode)
SdFile
Arduino/libraries/SD/src/utility/SdFat.h:class SdFile : public Print {
Arduino/libraries/SD/src/utility/SdFat.h: uint8_t open(SdFile& dirFile, const char* fileName) { // NOLINT
Arduino/libraries/SD/src/utility/SdFile.cpp:uint8_t SdFile::open(SdFile* dirFile, const char* fileName, uint8_t oflag) {
SdFile::openRoot
Arduino/libraries/SD/src/utility/SdFile.cpp:uint8_t SdFile::openRoot(SdVolume* vol) {
Arduino/libraries/SD/src/utility/SdFile.cpp:uint8_t SdFile::openRoot(SdVolume* vol, Stream* stream) {
/c/Users/bachman0/AppData/Local/Arduino15
packages/SparkFun/hardware/samd/1.3.2/variants/SparkFun_9DoF_M0/variant.cpp
[...]
// Multi-serial objects instantiation
SERCOM sercom0( SERCOM0 ) ;
SERCOM sercom1( SERCOM1 ) ;
SERCOM sercom2( SERCOM2 ) ;
SERCOM sercom3( SERCOM3 ) ;
SERCOM sercom4( SERCOM4 ) ;
SERCOM sercom5( SERCOM5 ) ;
Uart Serial1( &sercom0, PIN_SERIAL1_RX, PIN_SERIAL1_TX, PAD_SERIAL1_RX, PAD_SERIAL1_TX ) ;
Uart Serial( &sercom5, PIN_SERIAL_RX, PIN_SERIAL_TX, PAD_SERIAL_RX, PAD_SERIAL_TX ) ;
/**
* SERCOM0_Handler is mapped to Serial1
* How can I remap it to I2C??
*/
void SERCOM0_Handler()
{
Serial1.IrqHandler();
}
void SERCOM5_Handler()
{
Serial.IrqHandler();
}