Objective Development Forums

Dear Christian!

You couldn't give an example filtrations of packets in functions usbFunctionWrite () and usbFunctionWriteOut ()?

Everything, I have understood

In project options there is section Memory Settings, in it it is necessary to add a segment with a name .text:

Addition: The project managed to be transferred in AVRStudio, now it is compiled. But the HEX-file looks so: :1000000050C06DC269C068C067C066C065C064C0CA :1000100063C062C061C060C05FC05EC05DC05CC0E4 :100020005BC05AC059C00403090412036F00620088 :100030006400650076002E00610074001003480023 That is the cod...

Dear Christian!

Prompt please how to transfer project BootloadHID to AVRStudio environment.

If to use in the console the utility make the code is compiled, but in AVRStudio errors are always produced

Excuse, has forgotten to write - I use ATMega8. I use AVRStudio, in project customisations has specified compiler AVR-GCC. Function boot_program_page is placed in area bootloader. void BOOTLOADER_SECTION boot_program_page (uint32_t page) { uint16_t i; uint8_t sreg; uint8_t ser_1; uint8_t ser_2; uint...

Thanks for the answer, Christian. On your site there is an example - bootloadHID - m I have checked up - it works, but all functions are called from usbFunctionWrite. Explain please why this example works? uchar usbFunctionWrite(uchar *data, uchar len) { union { addr_t l; uint s[sizeof(addr_t)/2]; u...

Respected Christian! I use an example hid-data and I too try to write the data in memory of programs - in area NRWW. I use functions boot_page_erase, boot_page_fill and boot_page_write which are in function boot_program_page. Function boot_program_page is placed in bootloader area. It is called from...

Christian, is again necessary to me your help

In an example hid-data the exchange goes through default control endpoint. Where it is described descriptor by this endpoint? (In a file usbdrv.c described two endpoint, with numbers 1 and 3)

Excuse, I have understood

Has downloaded HID Descriptor Tool and has checked up parametre Report Count - for 512 byte it should be such: 0x96, 0x00, 0x02.

Now all works

Yes, I saw this define and have installed it, but it has not helped Also I have changed a report-descriptor : PROGMEM char usbHidReportDescriptor[23] = { /* USB report descriptor */ 0x06, 0x00, 0xff, // USAGE_PAGE (Generic Desktop) 0x09, 0x01, // USAGE (Vendor Usage 1) 0xa1, 0x01, // COLLECTION (App...

Thanks.

I use an example hid-data. I wish to write and read 512 byte in EEPROM.
But for me it is impossible to transfer more than 254 byte. In what there can be a problem?

You can use HID for bidirectional data transfer. However, since you must use feature reports (set and get), you are limited to fixed size data blocks. See the hid-data example, it uses HID feature reports to send and receive data. Respected Christian! You have written about limitation by the fixed ...

Hello!
I wish to make the HID-device (using example HID-DATA), but I want, that in the Manager of Devices my device was displayed not in Device HID section.
I should alter a file usbconfig.h and write my INF-file?

We use resonators Murata - compact, but not cheap. The admissible error - 0,5 %, but happens and more.
Model - CSTCE12M0G55-R0

Prompt please, whether probably to make the USB-device on chip ATMega8, using the built in RC-generator?