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Fix write_enable commands and method. 

-This only has effect if sector protection enabled.
pull/7774/head
heikki.rautakoski 2018-05-24 14:52:18 +03:00
parent 9ee3f5afa7
commit ba46863c42
1 changed files with 7 additions and 9 deletions
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16
DataFlashBlockDevice.cpp
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@ -60,8 +60,8 @@ enum opcode {
/* non-exhaustive command list */ /* non-exhaustive command list */
enum command { enum command {
DATAFLASH_COMMAND_WRITE_DISABLE = 0x3D2A7F9A, DATAFLASH_COMMAND_WRITE_DISABLE = 0x3D2A7FA9,
DATAFLASH_COMMAND_WRITE_ENABLE = 0x3D2A7FA9, DATAFLASH_COMMAND_WRITE_ENABLE = 0x3D2A7F9A,
DATAFLASH_COMMAND_BINARY_PAGE_SIZE = 0x3D2A80A6, DATAFLASH_COMMAND_BINARY_PAGE_SIZE = 0x3D2A80A6,
DATAFLASH_COMMAND_DATAFLASH_PAGE_SIZE = 0x3D2A80A7, DATAFLASH_COMMAND_DATAFLASH_PAGE_SIZE = 0x3D2A80A7,
}; };
@ -525,22 +525,20 @@ void DataFlashBlockDevice::_write_enable(bool enable)
/* enable writing, disable write protection */ /* enable writing, disable write protection */
if (enable) { if (enable) {
/* if not-write-protected pin is connected, select it */
if (_nwp.is_connected()) {
_nwp = 1;
}
/* send 4 byte command enabling writes */ /* send 4 byte command enabling writes */
_write_command(DATAFLASH_COMMAND_WRITE_ENABLE, NULL, 0); _write_command(DATAFLASH_COMMAND_WRITE_ENABLE, NULL, 0);
} else {
/* if not-write-protected pin is connected, deselect it */ /* if not-write-protected pin is connected, deselect it */
if (_nwp.is_connected()) { if (_nwp.is_connected()) {
_nwp = 0; _nwp = 0;
} }
} else {
/* if not-write-protected pin is connected, select it */
if (_nwp.is_connected()) {
_nwp = 1;
}
/* send 4 byte command disabling writes */ /* send 4 byte command disabling writes */
_write_command(DATAFLASH_COMMAND_WRITE_DISABLE, NULL, 0); _write_command(DATAFLASH_COMMAND_WRITE_DISABLE, NULL, 0);
} }