User guide

CY3687 MoBL-USB FX2LP18 Development Kit User Guide, Doc. # 001-68582 Rev. *B 85

MoBL-USB Development Kit Firmware Examples

Located at <Installed_directory>\<version\Firmware/vend_ax and observe vendor commands imple-

mented in the C routine - DR_VendorCmnd (void) .Following are the vendor commands defined in

"vend_ax.c" file:

The example is compiled using the Keil IDE similar to previous examples and corresponding images

for RAM (vend_ax.hex) and EEPROM (vend_ax.iic) can be generated. Both the images are located

at <Installed_directory>\<version>\vend_ax.Using CyConsole/CyControlCenter the images can be

downloaded as outlined in section Method to Download Firmware Image to MoBL-USB Internal RAM

Memory on page 62 and Method to Download Firmware Image to External I2C EEPROM on

page 63.

8.12.1 Testing the vend_ax Example

1. 0xA2 command-Read/Write to EEPROM

As mentioned in table this command is used to read and write contents to small EEPROM. Short

pins 2-3 of JP7 to enable Writes to small EEPROM-U8.Before Writing to EEPROM using 0xA2

command set SW2-LG-SM and SW1-SMALL EEPROM..

a. Test using CyConsole

To read the contents of small EEPROM select Req=0xA2 wValue=0 wIndex=0 Length = 24 bytes

(data to read) and direction IN for reading the data on control endpoint. Click on Vend Req. Fol-

lowing figure summarizes the entire operation

Figure 8-10. A2 Vendor Command Read Operation using Cyconsole

Observe the contents read from the small EEPROM

To write the contents to small EEPROM select Req=0xA2 wValue=0 wIndex=0 Length = 24 bytes

(data to read) and direction OUT for sending data on control endpoint. The small EEPROM con-

Table 8-4. Vendor Command Definitions in vend_ax Example

S.No

Vendor Command/Macro

Definition

Function

1 0xA2/VR_EEPROM Downloads data to a small EEPROM

2 0xA3/ VR_RAM Downloads data to internal RAM memory

0xA6/

VR_GET_CHIP_REV

The command retrieves the current revision of MOBL-USB FX2LP18 IC

4 0xA8/VR_RENUM The MoBL-USB FX2LP18 device disconnects and re-connect again.

5 0xA9/VR_DB_FX

The Commands selects double byte addressed large EEPROM-U7 and

the contents can be uploaded or downloaded to EEPROM

6 0xAA/VR_I2C_100 Sets the I2C interface to 100 kHz

7 0xAB/VR_I2C_400 Sets the I2C interface to 400 kHz