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working; need to re-read some code before continuing

partial-rewrite
Ben Blazak 2013-12-18 16:32:39 -08:00
parent bae1ae882a
commit d5ae5e003b
1 changed files with 13 additions and 48 deletions
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61
firmware/lib/layout/eeprom-macro/atmega32u4.c
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@ -75,12 +75,6 @@
* - `EEMEM_END_ADDRESS_END`
* - `EEMEM_VERSION_START`
* - `EEMEM_VERSION_END`
* - `EEMEM_ROWS_START`
* - `EEMEM_ROWS_END`
* - `EEMEM_COLUMNS_START`
* - `EEMEM_COLUMNS_END`
* - `EEMEM_TABLE_START`
* - `EEMEM_TABLE_END`
* - `EEMEM_MACROS_START`
* - `EEMEM_MACROS_END`
* - `EEMEM_END`: The address of the last byte of our block of EEMEM
@ -93,33 +87,20 @@
* - byte 0: LSB of `EEMEM_END`
* - byte 1: MSB of `EEMEM_END`
* - VERSION:
* - byte 0..15: Each byte is a copy of the value of `VERSION`. We keep
* more than 1 copy for write balancing.
* - These bytes will all be set to `VERSION` as the last step of
* initializing our portion of the EEPROM.
* - Before sensitive writes (sequences of writes which will corrupt
* our data if they are interrupted), a random one of these values
* will be erased (set to `0xFF`). After the write is completed, the
* changed value will be restored to `VERSION`.
* - Upon initialization, if any of these values is not equal to the
* current `VERSION`, our portion of the EEPROM should be
* reinitialized.
* - ROWS:
* - byte 0: The number of rows in TABLE (`OPT__KB__ROWS`)
* - COLUMNS:
* - byte 0: The number of columns in TABLE (`OPT__KB__COLUMNS`)
* - TABLE:
* - byte 0..`(OPT__KB__ROWS * OPT__KB__COLUMNS - 1)`: TODO
* - This byte will all be set to `VERSION` as the last step of
* initializing our portion of the EEPROM.
* - Upon initialization, if this value is not equal to the current
* `VERSION`, our portion of the EEPROM should be reinitialized.
* - MACROS:
* - byte 0..`(EEMEM_END - EEMEM_TABLE_END - 1)`: TODO
* - byte 0..`(EEMEM_END - EEMEM_VERSION_END - 1)`: TODO
*
* Notes:
* - `START_ADDRESS`, `ROWS`, `COLUMNS`, and `END_ADDRESS` are all written as
* part of our effort to make sure that the assumptions in place when writing
* the data don't shift (undetected) by the time it gets read. Any of these
* values could change, legitimately, without `VERSION` being incremented,
* but it's important that any two builds of the firmware that deal with this
* section of the EEPROM have the same values for each.
* - `START_ADDRESS` and `END_ADDRESS` are written as part of our effort to
* make sure that the assumptions in place when writing the data don't shift
* (undetected) by the time it gets read. Either of these values could
* change, legitimately, without `VERSION` being incremented, but it's
* important that any two builds of the firmware that deal with this section
* of the EEPROM have the same values for each.
*/
#define EEMEM_START OPT__EEPROM__EEPROM_MACRO__START
#define EEMEM_START_ADDRESS_START EEMEM_START
@ -127,16 +108,8 @@
#define EEMEM_END_ADDRESS_START EEMEM_START_ADDRESS_END + 1
#define EEMEM_END_ADDRESS_END EEMEM_END_ADDRESS_START + 1
#define EEMEM_VERSION_START EEMEM_END_ADDRESS_END + 1
#define EEMEM_VERSION_END EEMEM_VERSION_START + 15
#define EEMEM_ROWS_START EEMEM_VERSION_END + 1
#define EEMEM_ROWS_END EEMEM_ROWS_START + 0
#define EEMEM_COLUMNS_START EEMEM_ROWS_END + 1
#define EEMEM_COLUMNS_END EEMEM_COLUMNS_START + 0
#define EEMEM_TABLE_START EEMEM_COLUMNS_END + 1
#define EEMEM_TABLE_END EEMEM_TABLE_START + ( OPT__KB__ROWS \
* OPT__KB__COLUMNS \
- 1 )
#define EEMEM_MACROS_START EEMEM_TABLE_END + 1
#define EEMEM_VERSION_END EEMEM_VERSION_START + 0
#define EEMEM_MACROS_START EEMEM_VERSION_END + 1
#define EEMEM_MACROS_END EEMEM_END
#define EEMEM_END OPT__EEPROM__EEPROM_MACRO__END
@ -277,14 +250,6 @@ uint8_t current_macro_length;
// - need to write `kb__layout__exec_key_layer()` (or something)
//
// ----------------------------------------------------------------------------
// TODO:
//
// - we probably don't need a TABLE section... it might save a lot of effort
// and space to just do without one. if speed becomes an issue, we could
// probably initialize a table in ram, and use that - it shouldn't actually
// be that big, and ram is much faster.
//
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// local functions ------------------------------------------------------------