Microchip dsPIC33 PIC24
Contents
Introduction
ERIKA3 now supports Microchip dsPIC33/PIC24 MCUs.
The following MCUs are currently supported:
- dsPIC33EV256GM106
Such support has been successfully tested on the following board:
Tutorials
The following tutorials are available for this board:
Synopsys
This manual describes the porting details of the ERIKA Enterprise v3 kernel(s) for Microchip dsPIC33/PIC24 families of microcontrollers.
- dsPIC33/PIC24 integration features
- Support for MPLAB-X IDE v4.05
- Support for MPLAB XC16 C Compiler v1.33
- Support for the following families Microchip dsPIC33/PIC24 MCUs:
- dsPIC33EV
- dsPIC33EV256GM106 specific MCU
- dsPIC33EV
- Support for following boards
- dsPIC33EV 5V CAN-LIN STARTER KIT (dsPIC33EV256GM106)
Configuration and Programming
ERIKA Enterprise is configured through RT-Druid and an OIL file. Here are listed, after the information to set compiler path, the OIL fields customized for Microchip dsPIC33/PIC24 architecture.
MPLAB-X IDE Path
It is possible to choose the path in three different ways:
- Specific environment variables: MPLAB_X_IDE_FILES
- E.g.: MPLAB_X_IDE_FILES=C:\Program Files (x86)\Microchip\MPLABX\v4.05
- RT-Druid Eclipse IDE Property.
- RT-Druid Configuration File Entry: preference_dspic33_pic24__path_for_mplab_x_ide
- E.g.: preference_dspic33_pic24__path_for_mplab_x_ide=C:\Program Files (x86)\Microchip\MPLABX\v4.05
Here is an example of RT-Druid configuration file.
MPLAB XC16 C Compiler Path
It is possible to choose the path in three different ways:
- Specific environment variables: XC16_TOOLS
- E.g.: XC16_TOOLS=C:\Program Files (x86)\Microchip\xc16\v1.33
- RT-Druid Eclipse IDE Property.
- RT-Druid Configuration File Entry: preference_dspic33_pic24__path_for_xc16_compiler
- E.g.: preference_dspic33_pic24__path_for_xc16_compiler=C:\Program Files (x86)\Microchip\xc16\v1.33
Here is an example of RT-Druid configuration file.
CPU
CPU_DATA object must be set to DSPIC33_PIC24.
MODEL attribute of MCU_DATA supports for now the dsPIC33 value only.
Example of a CPU_DATA section:
CPU_DATA = DSPIC33_PIC24 { MODEL = dsPIC33; ... };
MCU
MCU_DATA object supports for now the dsPIC33EV value only.
MODEL attribute of MCU_DATA supports for now the dsPIC33EV256GM106 value only.
Example of a MCU_DATA section:
MCU_DATA = dsPIC33EV { MODEL = dsPIC33EV256GM106; };
BOARD
BOARD_DATA object supports for now the dsPIC33EV_SK value only.
Example of a BOARD_DATA section:
BOARD_DATA = dsPIC33EV_SK;
Interrupt Handling
Interrupt Handling is microcontroller dependent so for each supported Microchip dsPIC33/PIC24 microcontroller family, the ISRs configuration of ERIKA Enterprise v3 is shown below.
dsPIC33EV Family
The dsPIC33EV family of dsPIC33/PIC24 microcontrollers has an interrupt vector table which is stored in the flash memory. The lowest addresses of the interrupt vector table are allocated to the RESET and to the interrupt vectors. Interrupt handlers placed at lower addresses have higher hardware priorities than interrupt handlers placed at higher addresses so the PRIORITY attribute of the ISR object in the OIL is USELESS. The complete list of SOURCE entries is shown below.
-
OSCFAIL
: External Pin, Power-on Reset, Brown-out Reset and Watchdog System Reset -
ADDRERR
: External Interrupt Request 0 -
SGHT
: External Interrupt Request 1 -
STKERR
: Pin Change Interrupt Request 0 -
MATHERR
: Pin Change Interrupt Request 1 -
DMACERR
: Pin Change Interrupt Request 2 -
SGST
: Watchdog Time-out Interrupt -
INT0
: Timer/Counter2 Compare Match A -
IC1
: Timer/Counter2 Compare Match B -
OC1
: Timer/Counter2 Overflow -
T1
: Timer/Counter1 Capture Event -
DMA0
: Timer/Counter1 Compare Match A -
IC2
: Timer/Coutner1 Compare Match B -
OC2
: Timer/Counter1 Overflow -
T2
: Timer/Counter0 Compare Match A -
T3
: Timer/Counter0 Compare Match B -
SPI1E
: Timer/Counter0 Overflow -
SPI1
: SPI Serial Transfer Complete -
U1RX
: USART Rx Complete -
U1TX
: USART, Data Register Empty -
AD1
: USART, Tx Complete -
DMA1
: Conversion Complete -
NVM
: EEPROM Ready -
SI2C1
: Analog Comparator -
MI2C1
: 2-wire Serial Interface -
CMP1
: Store Program Memory Ready -
CN
: External Pin, Power-on Reset, Brown-out Reset and Watchdog System Reset -
INT1
: External Interrupt Request 0 -
DMA2
: External Interrupt Request 1 -
OC3
: Pin Change Interrupt Request 0 -
OC4
: Pin Change Interrupt Request 1 -
T4
: Pin Change Interrupt Request 2 -
T5
: Watchdog Time-out Interrupt -
INT2
: Timer/Counter2 Compare Match A -
U2RX
: Timer/Counter2 Compare Match B -
U2TX
: Timer/Counter2 Overflow -
SPI2E
: Timer/Counter1 Capture Event -
SPI2
: Timer/Counter1 Compare Match A -
C1RX
: Timer/Coutner1 Compare Match B -
C1
: Timer/Counter1 Overflow -
DMA3
: Timer/Counter0 Compare Match A -
IC3
: Timer/Counter0 Compare Match B -
IC4
: Timer/Counter0 Overflow -
PSEM
: SPI Serial Transfer Complete -
U1E
: USART Rx Complete -
U2E
: USART, Data Register Empty -
C1TX
: USART, Tx Complete -
CTMU
: Conversion Complete -
PWM1
: EEPROM Ready -
PWM2
: Analog Comparator -
PWM3
: 2-wire Serial Interface -
ICD
: Store Program Memory Ready -
I2C1
: USART Rx Complete -
SENT1ERR
: USART, Data Register Empty -
SENT1
: USART, Tx Complete -
SENT2ERR
: Conversion Complete -
SENT2
: EEPROM Ready -
ECCSBE
: Analog Comparator
OSEK/VDX Extensions
This Section contains information about the OSEK/VDX Extensions (or optional features) that have been implemented for the dsPIC33/PIC24 support.
System Timer
System Timer is microcontroller dependent so for each supported Microchip dsPIC33/PIC24 microcontroller family, the System Timer configuration of ERIKA Enterprise v3 is shown below.
dsPIC33EV Family
For the dsPIC33EV family of dsPIC33/PIC24 microcontrollers the System Timer is linked to Hardware Timers so the DEVICE attribute MUST be se to T1 orT2or ... or T5 as shown below.
COUNTER SystemTimer { MINCYCLE = 1; MAXALLOWEDVALUE = 65535; TICKSPERBASE = 1; TYPE = HARDWARE { DEVICE = "T1"; SYSTEM_TIMER = TRUE; }; SECONDSPERTICK = 0.001; };