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參數(shù)資料
| 型號： | uPSD3234 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Flash Programmable System Device with 8032 Microcontroller Core(嵌入高速“8032微控制器核”的Flash型可編程系統(tǒng)器) |
| 中文描述： | 閃存可編程系統(tǒng)器件與8032微控制器內(nèi)核（嵌入高速“8032微控制器核”的閃存型可編程系統(tǒng)器） |
| 文件頁數(shù)： | 17/54頁 |
| 文件大?。?/td> | 736K |
| 代理商： | UPSD3234 |
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AN1886 - APPLICATION NOTE
String index zero for all languages returns a string descriptor that contains an array of the two-byte
LANG-
ID
codes that are supported by the device.
A USB device may omit all string descriptors. USB devices that omit all string descriptors shall not return
an array of
LANGID
codes. The array of
LANGID
codes is not NULL-terminated. The size of the array (in
bytes) is computed by subtracting two from the value of the first byte of the descriptor.
The most important and used strings are: Language ID string, Manufacturer, Product and Serial number.
These are shown in
APPENDIX G.
.
StringX
was created as default string for all not supported or not implemented strings:
const uchar code stringXDesc[2] =
{
0, 0, // Size, Type
}
;
At the end, mainly for easy access, all the strings are collected in the following structure:
// Table of String Descriptors
const uchar * const code stringDescTable[] =
{
string0Desc,
string1Desc,
string2Desc,
string3Desc,
stringXDesc //no string
}
;
Example of USB Descriptors for HID Class Devices
The sample device is a low-speed 105-key keyboard with an integrated pointing device. This device could
be built using just one interface. However, two are used in this example so the device can support the boot
protocol. As a result there are two Interface, Endpoint, HID and Report descriptors for this device.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| uPSD3251(中文) | Flash Programmable System Devices with 8032 Microcontroller Core(帶8032微控制器內(nèi)核的Flash可編程系統(tǒng)設(shè)備) |
| uPSD3251 | Flash Programmable System Devices with 8032 Microcontroller Core(帶8032微控制器內(nèi)核的Flash可編程系統(tǒng)設(shè)備) |
| uPSD3253AV-24T1T | Flash Programmable System Devices with 8032 Microcontroller Core |
| UPSD3253B | Two and Three Channel Codewheels |
| UPSD3253BV | Flash Programmable System Devices with 8032 Microcontroller Core |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPSD32348V24V6ES | 制造商:ST MICRO 功能描述:* |
| UPSD3234A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core |
| UPSD3234A-24T1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core |
| UPSD3234A-24T1T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core and 64Kbit SRAM |
| UPSD3234A-24T6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core |
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