Arduino branch, Support for Atmel ATSAMR21E18A #12
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…for reset on the ATSAMD21E18A
…SAM-BA bootloader for SAM D21, since the SAM R21 is essentially a SAM D21 + built-in AT86RF233
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| #define ATSAMD_CHIPID_MASK (0xFFFF00FFul) // mask for DIE & REV bitfields removal in Samba::chipId() | |||
| #define ATSAMD_BOOTLOADER_SIZE (0x00002000ul) // 8192 bytes | |||
| #define ATSAMR_BOOTLOADER_SIZE (0x00001000ul) // 4096 bytes, USB-CDC only | |||
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Is the SAMR completely without USB?
I'm wondering if the BOOTLOADER_SIZE should be set here or should be given as a parameter.
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The SAM R21 line of chips have native USB lines (D+/D-) ....and since it's still a SAM D21 (but with a built in RF chip on a SERCOM SPI set of lines), the SAM-BA bootloader works on all R21 chips.
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Yes, bootloader size should be given as a parameter, because for samd21e/g/j exist SAM-BA bootloaders with 4kB size (one interface) and 8kB size (UART+USB).
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Note, SAM R21 USB works only if you copy/refactor the SAM D21 CMSIS Atmel
headers and C files to reference SAM R21. As an example, check the atsamr21
bootloader for FemtoBeacon (inside Atmel folder)
... unfortunately, the original headers that ship from Atmel for thr SAM
R21 did not (as of this writing) work when attempting to use USB. In fact,
non of the LwMesh examples even came with USB enabled.
It took me a lot of work to figure out USB + Wireless + Arduino support
for the SAM R21
Enjoy! :-)
On Jun 21, 2016 7:44 AM, "MartinManduch" [email protected] wrote:
In src/Devices.h
#12 (comment):@@ -34,6 +34,7 @@
#define ATSAMD_CHIPID_MASK (0xFFFF00FFul) // mask for DIE & REV bitfields removal in Samba::chipId()
#define ATSAMD_BOOTLOADER_SIZE (0x00002000ul) // 8192 bytes
+#define ATSAMR_BOOTLOADER_SIZE (0x00001000ul) // 4096 bytes, USB-CDC onlyYes, bootloader size should be given as a parameter, because for
samd21e/g/j exist SAM-BA bootloaders with 4kB size (one interface) and 8kB
size (UART+USB).—
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Arduino branch, Support for Atmel ATSAMR21E18A
Adding in support for the Atmel ATSAMR21E18A, which is just a SAM D21 with on-board AT86RF233 RF functionality.