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avr.c: Adds avr_tpi_program_enable

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Generic function enabling external programming on TPI devices. This
function sets the required guard time (which is passed in as parameter),
checks the TPI identification register, writes SKEY command + SKEY, and
finally polls the NVMEN bit in TPISR.

avr.h: Add prototype definitions of avr_tpi_program_enable() and
avr_tpi_chip_erase().
avrftdi_tpi.c: Removes tpi_skey_cmd array, containing the SKEY command
and the SKEY bytes.
tpi.h: Adds tpi_skey_cmd array, containing the SKEY command and the SKEY
bytes, but in the reverse order of tpi_skey.

git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1167 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Hannes Weisbach
2013-05-06 12:49:26 +00:00
parent 5b7952ade8
commit be385b2b48
5 changed files with 60 additions and 2 deletions
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tpi.h
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@@ -66,6 +66,8 @@ static const unsigned char tpi_skey[] = { 0x12, 0x89, 0xAB, 0x45, 0xCD, 0xD8, 0x
#define TPI_NVMCMD_SECTION_ERASE 0x14
#define TPI_NVMCMD_WORD_WRITE 0x1D
static const unsigned char tpi_skey_cmd[] = { TPI_CMD_SKEY, 0xff, 0x88, 0xd8, 0xcd, 0x45, 0xab, 0x89, 0x12 };
#ifdef __cplusplus
}
#endif