A tool for modifying GP2Y0E03 I2C address with E-Fuse running on mbed device.
STM32F401RE Nucleo GP2Y0E03
+----------------+ +------+
| GND ------------ GND |
| | | |
| SDA(D14) -------+---- SDA |
| | | | |
| | <R4K7>| |
| | | | |
| 3V3 -------+---- VIN |
| | | | |
| | +---- VDD |
| | | | |
| | +---- GPIO|
| | | | |
| | <R4K7>| |
| | | | |
| SCL(D15) -------+---- SCL |
| | | |
| D7 ------------ Vpp |
| | | |
+----------------+ +------+
- R4K7 ... 4.7K Ohm pull-up resistor
- Vout(A) is never used for I2C
yt target st-nucleo-f401re-gcc
yt install
Copy build/st-nucleo-f401re-gcc/source/gp2y0e03-address-programmer.bin to the mbed folder or use st-flash as shown below.
st-flash write build/st-nucleo-f401re-gcc/source/gp2y0e03-address-programmer.bin 0x8000000
Open app.cpp and edit the following line to modify the address.
#define NEW_ADDRESS_DATA 0x01
Note that NEW_ADDRESS_DATA is NOT a slave address. Choose the Data column value of the following table.
| Slave ID | 7-bit Address | Data |
|---|---|---|
| 0x00 | 0x00 | 0x00 |
| 0x10 | 0x08 | 0x01 |
| 0x20 | 0x10 | 0x02 |
| 0x30 | 0x18 | 0x03 |
| 0x40 | 0x20 | 0x04 |
| 0x50 | 0x28 | 0x05 |
| 0x60 | 0x30 | 0x06 |
| 0x70 | 0x38 | 0x07 |
| 0x80 | 0x40 DEFAULT! | 0x08 |
| 0x90 | 0x48 | 0x09 |
| 0xA0 | 0x50 | 0x0A |
| 0xB0 | 0x58 | 0x0B |
| 0xC0 | 0x60 | 0x0C |
| 0xD0 | 0x68 | 0x0D |
| 0xE0 | 0x70 | 0x0E |
| 0xF0 | 0x78 | DO NOT USE |
Please do NOT choose 0x08 as the corresponding Salve ID is the default value.
Updating Slave ID to 0xF0 broke my sensors (I broke 3 sensors...). So I highly recommend you not to use the address 0xF0 (data for 0x0F).
The Slave ID is an I2C address for data writing. See Table.21 List of Slave ID in the application note.
See the description above.
Push 'Reset' button after connecting it in order to display the prompt message.
See the schematic above.
Now ready for performing E-Fuse programmer. Push the blue button to continue.
Open your terminal app and connect the board.
Keep 'Reset' button down. Push Button1 then release 'Reset' button. Finally, release Button1.
And you will see the distance in cm on your terminal console.
You can see the following output by connecting with a terminal app with baud rate 115200.
** Welcome to Address Programmer!
** I'll update the GP2Y0E03 I2C address from [0x80(7-bit:0x40)](Write) to [0x10(7-bit:0x08)](Write)
** You cannot revert the change once the address is updated
** Push Button1 to continue!
+++++++++++++++++++++++++++++++++++
L E T ' S S T A R T ! ! !
+++++++++++++++++++++++++++++++++++
stage 1
stage 2
stage 3
stage 4
stage 5
stage 6
stage 7
stage 8
stage 9
Check 0x27[4:0] => 0
e_fuse_stage9():result => 0 (0=success)
===================================
F I N I S H
===================================
The 'stage 10' functions like e_fuse_stage10_1_1() are never tested as I haven't failed to modify addresses yet.
- 1.2.0
- Show 7-bit address as well as 8-bit address
- Describe a GP2Y0E03 e-fuse issue which causes a sensor device broken
- 1.1.0
- Add a new mode allowing to test if a sensor works properly with the updated address
- 1.0.0
- Initial Release