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rp: Add description for SPI flash commands

This commit is contained in:
James Turton 2022-06-10 17:38:01 +03:00 committed by Rachel Mant
parent b43b9a6545
commit af48a343a8
1 changed files with 9 additions and 0 deletions
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9
src/target/rp.c
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@ -52,6 +52,15 @@
#define FLASHSIZE_32K_BLOCK (32 * 1024)
#define FLASHSIZE_64K_BLOCK (64 * 1024)
#define MAX_FLASH (16 * 1024 * 1024)
/* Instruction codes taken from Winbond W25Q16JV datasheet, as used on the
* original Pico board from Raspberry Pi.
* https://www.winbond.com/resource-files/w25q16jv%20spi%20revd%2008122016.pdf
* All dev boards supported by Pico SDK V1.3.1 use SPI flash chips which support
* these commands. Other customs boards using different SPI flash chips might
* not support these commands
*/
#define FLASHCMD_SECTOR_ERASE 0x20
#define FLASHCMD_BLOCK32K_ERASE 0x52
#define FLASHCMD_BLOCK64K_ERASE 0xd8