Am 30.04.2021 um 15:06 schrieb Gregory Nutt:
... The main reason is that the AT24XX MTD driver only can handle
one type of devices on a single bus. ..
The is a deficiency in the driver and should be pretty easy to fix by
passing the I2C address during driver initialization. Other drivers
do
Am 29.04.2021 um 20:43 schrieb Gregory Nutt:
... The main reason is that the AT24XX MTD driver only can handle one
type of devices on a single bus. ..
The is a deficiency in the driver and should be pretty easy to fix by
passing the I2C address during driver initialization. Other drivers do
... The main reason is that the AT24XX MTD driver only can handle one
type of devices on a single bus. ..
The is a deficiency in the driver and should be pretty easy to fix by
passing the I2C address during driver initialization. Other drivers do
that.
On Apr 29, 2021, at 10:12 AM, Frank-Christian Kruegel wrote:
>
> Am 29.04.2021 um 15:23 schrieb Gregory Nutt:
>> There are several Microchip/Atmel boards that come with an Atmel MAC in
>> AT24MAC402 EEPROM. You should be able to clone that logic (including
>> setting the MAC address). See:
>>
Am 29.04.2021 um 15:23 schrieb Gregory Nutt:
There are several Microchip/Atmel boards that come with an Atmel MAC in
AT24MAC402 EEPROM. You should be able to clone that logic (including
setting the MAC address). See:
samv7/samv71-xult/src/sam_ethernet.c
samv7/same70-xplained/src/sam_ethernet
I assumed that the MAC is held in extended memory like the Atmel parts
(otherwise, not much in the previous email makes sense).
183 /* Put the AT24 back in normal memory access mode */
184
185 ret = at24->ioctl(at24, MTDIOC_EXTENDED, 0);
186 if (ret < 0)
187 {
There are several Microchip/Atmel boards that come with an Atmel MAC in
AT24MAC402 EEPROM. You should be able to clone that logic (including
setting the MAC address). See:
samv7/samv71-xult/src/sam_ethernet.c
samv7/same70-xplained/src/sam_ethernet.c
These keep the MAC address in the AT24MAC4
Hi Frank-Christian,
For small EEPROM you can use the EEPROM char driver directly, please
take a look inside drivers/eeprom/
Then in your board side you just need to do something like this:
finfo("Initialize I2C%d\n", AT24_I2C_BUS);
i2c = sam_i2c_master_initialize(AT24_I2C_BUS);
if (!
Hi.
I'm currently porting NuttX to some proprietary compute modules with
STM32F7 and STM32H7. Each and every board has got a small AT24MAC402 256
Byte EEPROM with additional UID and MAC address accessible under a
second I2C address, and many boards have an additional AT24C256 32kB EEPROM.
I'
