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Add a function to erase the memory of the OSTC3

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This is the fist step in the firmware upgrade process.

This code is inspired by JeanDo ostc-companion.

Reviewed-by: Jef Driesen <jef@libdivecomputer.org>
Signed-off-by: Anton Lundin <glance@acc.umu.se>
This commit is contained in:
Anton Lundin 2014-11-09 19:41:30 +01:00 committed by Jef Driesen
parent 08dda98c29
commit 5c71ff34c4
1 changed files with 18 additions and 0 deletions
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18
src/hw_ostc3.c
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@ -46,10 +46,13 @@
#define SZ_MEMORY 0x200000
#define SZ_CONFIG 4
#define SZ_FIRMWARE 0x01E000 // 120KB
#define SZ_FIRMWARE_BLOCK 0x1000 // 4KB
#define FIRMWARE_AREA 0x3E0000
#define RB_LOGBOOK_SIZE 256
#define RB_LOGBOOK_COUNT 256
#define S_ERASE 0x42
#define S_READY 0x4C
#define READY 0x4D
#define HEADER 0x61
@ -872,3 +875,18 @@ hw_ostc3_firmware_readfile (hw_ostc3_firmware_t *firmware, dc_context_t *context
return DC_STATUS_SUCCESS;
}
static dc_status_t
hw_ostc3_firmware_erase (hw_ostc3_device_t *device, unsigned int addr, unsigned int size)
{
// Convert size to number of pages, rounded up.
unsigned char blocks = ((size + SZ_FIRMWARE_BLOCK - 1) / SZ_FIRMWARE_BLOCK);
// Erase just the needed pages.
unsigned char buffer[4];
array_uint24_be_set (buffer, addr);
buffer[3] = blocks;
return hw_ostc3_transfer (device, NULL, S_ERASE, buffer, sizeof (buffer), NULL, 0);
}