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Sansa Connect: Use deviceid in USB Serial Number

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Atmel AT88SC6416C CryptoMemory is almost I2C compatible. The device
is connected to bitbanged I2C bus shared with compliant I2C devices.

Change-Id: Iec54702db1bdfb93c01291eef18ec60391c63b16
This commit is contained in:
Tomasz Moń 2021-07-10 08:56:32 +02:00
parent 663539619c
commit b4ecd612f7
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GPG key ID: 92BA8820D4D517C8
8 changed files with 183 additions and 0 deletions
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34
firmware/drivers/generic_i2c.c
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@ -198,6 +198,40 @@ end:
return ret;
}
int i2c_write_read_data(int bus_index, int bus_address,
const unsigned char* buf_write, int count_write,
unsigned char* buf_read, int count_read)
{
int i;
int ret = 0;
const struct i2c_interface *iface = i2c_if[bus_index];
i2c_start(iface);
if (!i2c_outb(iface, bus_address))
{
ret = -2;
goto end;
}
for(i = 0;i < count_write;i++)
{
if (!i2c_outb(iface, buf_write[i]))
{
ret = -3;
goto end;
}
}
for(i = 0;i < count_read-1;i++)
buf_read[i] = i2c_inb(iface, true);
buf_read[i] = i2c_inb(iface, false);
end:
i2c_stop(iface);
return ret;
}
/* returns bus index which can be used as a handle, or <0 on error */
int i2c_add_node(const struct i2c_interface *iface)
{