CN204087806U - A kind of band hardware decode module music player - Google Patents
A kind of band hardware decode module music player Download PDFInfo
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- CN204087806U CN204087806U CN201420560345.8U CN201420560345U CN204087806U CN 204087806 U CN204087806 U CN 204087806U CN 201420560345 U CN201420560345 U CN 201420560345U CN 204087806 U CN204087806 U CN 204087806U
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- hardware decode
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- mcu
- interface module
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Abstract
A kind of band hardware decode module music player, relates to music player.Be provided with MCU module, USB device interface module, earphone interface module, key-press module, power module and hardware decode module; Described USB device interface module is connected with the microprocessor in MCU module, and the other end of USB device interface module is for inserting USB flash disk; Described earphone interface module is connected with hardware decode module, and the other end of earphone interface module is used for plugged earphone; Described key-press module is connected with the microprocessor in MCU module, and key-press module is provided with and suspends play button, volume+volume-key, upper next Qu Jian of Qu and a reset key; Described hardware decode module is connected with MCU module, and described power module is MCU module, USB device interface module, earphone interface module and hardware decode module provide power supply.Structure is simple, and directly can read USB flash disk sound intermediate frequency file.
Description
Technical field
The utility model relates to music player, especially relates to the one band hardware decode module music player that structure simply can be used for playing USB flash disk sound intermediate frequency file.
Background technology
At present, though music player can store data, itself directly can not read the audio file in USB flash disk, limits the service condition of user.
Summary of the invention
The purpose of this utility model is to provide the one band hardware decode module music player can play-overing USB flash disk sound intermediate frequency file.
The utility model is provided with MCU module, USB device interface module, earphone interface module, key-press module, power module and hardware decode module; Described USB device interface module is connected with the microprocessor in MCU module, and the other end of USB device interface module is for inserting USB flash disk; Described earphone interface module is connected with hardware decode module, and the other end of earphone interface module is used for plugged earphone; Described key-press module is connected with the microprocessor in MCU module, and key-press module is provided with and suspends play button, volume+volume-key, upper next Qu Jian of Qu and a reset key; Described hardware decode module is connected with MCU module, and described power module is MCU module, USB device interface module, earphone interface module and hardware decode module provide power supply.
The microprocessor of described MCU module can adopt STM32f107 type microprocessor.
Described hardware decode module can adopt VS1003 type decoding chip.
Described power module can be provided with 3 road power supplys and export, and the output voltage of 3 road power supplys can be 3.3V, 2.5V, 2.5V respectively.
The utility model structure is simple, and directly can read USB flash disk sound intermediate frequency file.The utility model adopts microprocessor to be directly connected with USB device, eliminates USB chip and peripheral circuit thereof.In addition, the utility model adopts hardware decode circuit, supports the decoding of WAV, MP3, WMA multiple format, fully meets the requirement of user.
Accompanying drawing explanation
Fig. 1 is the structure composition frame chart of the utility model embodiment.
Fig. 2 is the circuit theory of constitution figure of the utility model embodiment.
Embodiment
See Fig. 1, the utility model embodiment is provided with MCU module 1, USB device interface module 2, earphone interface module 3, key-press module 4, power module 5 and hardware decode module 6.
Described USB device interface module 2 is connected with the microprocessor in MCU module 1, and the other end of USB device interface module 2 is for inserting USB flash disk; Described earphone interface module 3 is connected with hardware decode module 5, and the other end of earphone interface module 3 is used for plugged earphone; Described key-press module 4 is connected with the microprocessor in MCU module 1, and key-press module 4 is provided with and suspends play button, volume+volume-key, upper next Qu Jian of Qu and a reset key; Described hardware decode module 6 is connected with MCU module 1, and described power module 5 is MCU module 1, USB device interface module 2, earphone interface module 3 and hardware decode module 6 provide power supply.
The microprocessor of described MCU module can adopt STM32f107 type microprocessor.
Described hardware decode module can adopt VS1003 type decoding chip.
Described power module can be provided with 3 road power supplys and export, and the output voltage of 3 road power supplys can be 3.3V, 2.5V, 2.5V respectively.
Principle of work of the present utility model is as follows:
After MCU module powers on, detect USB interface state, complete after USB flash disk inserts the initial work to USB flash disk, reading and preserve USB flash disk sound intermediate frequency file number, filename, format information, Initialize installation is carried out to hardware decode module.Now, microprocessor reads the data of first audio file automatically, and sends into hardware decode module and decode.Hardware decode module decoded data are carried out several send into earphone interface module after mode convertion.After earphone interface pattern receives analog signals, filtering process is carried out to it, then drive earphone to play music.In music process, just can be controlled the broadcasting of music by the interrupt routine of the button triggers microprocessor in key-press module.
See Fig. 2, the utility model is provided with microprocessor chip U1, hardware decode chip U2, USB interface P1, debugging interface P2, power interface J1, earphone interface J2, crystal oscillator Y1, Y2, voltage stabilizing chip VR1, VR2, VR3, button S1, S2, S3, S4, S5, S6, electric capacity C1 ~ C37, resistance R1 ~ R25.
After MCU module powers on, first the microprocessor pin needed is arranged and (PA4 is set, PA5, PA6, PA7, PC4, PB7, PE6, PB14 is floating input pattern, PC1 is set, PD2, PB13, PB15 is for recommending output mode), then (configuration SPI2 is full duplex host mode to configure SPI2 interface attributes, transmission byte is large end pattern 8 alignment, clock frequency 4.5MHz), the initial work to USB flash disk is completed after USB flash disk inserts, read and preserve the number of USB flash disk sound intermediate frequency file, filename, format information, Initialize installation is carried out to VS1003 decoding chip and (process of frequency multiplication is carried out to its clock, initialization volume, initialization audio).Now, again arranging SPI2 interface-clock-frequency is 18MHz, and then microprocessor reads the data of first audio file automatically, and sends into VS1003 decoding chip and decode.VS1003 decoded data are carried out several send into earphone interface module after mode convertion.After earphone interface module receives analog signals, filtering process is carried out to it, then drive earphone to play music.In music process, just can be controlled the broadcasting of music by the interrupt routine of the button triggers microprocessor in key-press module.
Claims (4)
1. be with a hardware decode module music player, it is characterized in that being provided with MCU module, USB device interface module, earphone interface module, key-press module, power module and hardware decode module; Described USB device interface module is connected with the microprocessor in MCU module, and the other end of USB device interface module is for inserting USB flash disk; Described earphone interface module is connected with hardware decode module, and the other end of earphone interface module is used for plugged earphone; Described key-press module is connected with the microprocessor in MCU module, and key-press module is provided with and suspends play button, volume+volume-key, upper next Qu Jian of Qu and a reset key; Described hardware decode module is connected with MCU module, and described power module is MCU module, USB device interface module, earphone interface module and hardware decode module provide power supply.
2. one is with hardware decode module music player as claimed in claim 1, it is characterized in that the microprocessor of described MCU module adopts STM32f107 type microprocessor.
3. one is with hardware decode module music player as claimed in claim 1, it is characterized in that described hardware decode module adopts VS1003 type decoding chip.
4. one is with hardware decode module music player as claimed in claim 1, and it is characterized in that described power module is provided with 3 road power supplys and exports, the output voltage of 3 road power supplys is respectively 3.3V, 2.5V, 2.5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420560345.8U CN204087806U (en) | 2014-09-26 | 2014-09-26 | A kind of band hardware decode module music player |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420560345.8U CN204087806U (en) | 2014-09-26 | 2014-09-26 | A kind of band hardware decode module music player |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204087806U true CN204087806U (en) | 2015-01-07 |
Family
ID=52180488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420560345.8U Expired - Fee Related CN204087806U (en) | 2014-09-26 | 2014-09-26 | A kind of band hardware decode module music player |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204087806U (en) |
-
2014
- 2014-09-26 CN CN201420560345.8U patent/CN204087806U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20180926 |