JavaScript for ARM Cortex M
Espruino port for SAM4S-Xplained
Create Espruino/boards/pins/atsam4s.ods from ATSAM4S datasheet
First columns are packages names and pin references, for example LQFP100, QFN48, etc... Next columns seems to be:
- Signal names, as per device pinout
- Pin type, I/O or System
- IO type? (FT or nothing)
- After reset
- Default
Need clarification on this file format!!!
Add Espruino/boards/img/SAM4S-Xplained.png Create pins visual information from SAM4S-Xplained schematics
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Image dimension: 1293px x 868px
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Connectors and pins (from left to right)
- J1 connector: 172px x 74px @ (171px, 71px)
- bottom: PA3 PB2 PA31 PA12 GND
- top: PA4 PB3 PA13 PA14 VDD_MAIN
- J2 connector: 171px x 73px @ (175px, 698px)
- bottom: PA22 PB0 PA17 PC13 GND
- top: PC12 PB1 PA21 PC15 VDD_MAIN
- J3 connector: 173px x 72px @ (906 px, 71px)
- bottom: PA20 PA23 PA15 PA2 GND
- top: PA11 PA18 PA16 PC2 5V
- J4 connector: 172px x 70px @ (904px, 699px)
- bottom: PA3 PB2 PA30 PA12 GND
- top: PA4 PB3 PA13 PA14 5V
- J1 connector: 172px x 74px @ (171px, 71px)
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LED1: PC10
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LED2: PC17
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User Button BP2: PA5
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JTAG/SWD:
- TDI: PB4
- TMS: PB6
- TCK: PB7
- TDO: PB5
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UART for VCP:
- PA9
- PA10
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USB device:
- DDM: PB10
- DDP: PB11
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Serial flash AT25DF321:
- NCS: PA5
- SCK: PA14
- SI: PA13
- SO: PA12
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OSC 32kHz:
- XIN: PA7
- XOUT: PA8
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OSC 12MHz:
- XIN: PB9
- XOUT: PB8
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2x512KB on 70ns external Static RAM (IS66WV51216DBLL):
- Address bus (A0-A18): PC18-PC31 PA18-PA20 PA0 PA1
- Data bus (D0-D7/D8-D15): PC0-PC7
- CS: PC14
- LB: PC15
- OE: PC11
- WE: PC8
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Capacitive Touch Slider:
- SL: PA25/PA24
- SM: PA27/PA26
- SR: PA29/PA28
Create Espruino/boards/SAM4S_XPLAINED.py from SAM4S-Xplained schematics
Espruino\targetlibs\arm contains CMSIS API
Espruino\targetlibs\atsam4s will contain ATSAM4S16C low-level drivers
Espruino\targets\sam4s-xplained\main.c -> system startup
Espruino\targets\sam4s-xplained\jshardware.c -> wrapper functions to low-level drivers
