Support MJPEG Video
Fork of SDBlockDevice_GR_PEACH by
SDBlockDevice_GR_PEACH.h@2:92f4e0620788, 2017-11-01 (annotated)
- Committer:
- zkimike
- Date:
- Wed Nov 01 20:56:18 2017 +0000
- Revision:
- 2:92f4e0620788
- Parent:
- 1:98b088c91edd
Increase SDSHC frequency
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
dkato | 0:4bc3a3f17825 | 1 | #ifndef MBED_SDFILESYSTEM_GR_PEACH_H |
dkato | 0:4bc3a3f17825 | 2 | #define MBED_SDFILESYSTEM_GR_PEACH_H |
dkato | 0:4bc3a3f17825 | 3 | |
dkato | 0:4bc3a3f17825 | 4 | #include "SDBlockDevice.h" |
dkato | 0:4bc3a3f17825 | 5 | |
dkato | 0:4bc3a3f17825 | 6 | /** |
dkato | 0:4bc3a3f17825 | 7 | * A class to communicate a SD |
dkato | 0:4bc3a3f17825 | 8 | */ |
dkato | 0:4bc3a3f17825 | 9 | class SDBlockDevice_GR_PEACH : public SDBlockDevice { |
dkato | 0:4bc3a3f17825 | 10 | public: |
dkato | 0:4bc3a3f17825 | 11 | |
dkato | 0:4bc3a3f17825 | 12 | /** |
dkato | 0:4bc3a3f17825 | 13 | * Constructor |
dkato | 0:4bc3a3f17825 | 14 | * |
dkato | 0:4bc3a3f17825 | 15 | * @param rootdir mount name |
dkato | 0:4bc3a3f17825 | 16 | */ |
dkato | 0:4bc3a3f17825 | 17 | SDBlockDevice_GR_PEACH() : SDBlockDevice(P8_5, P8_6, P8_3, P8_4), _sd_cd(P7_8), _connect(false) { |
dkato | 0:4bc3a3f17825 | 18 | // Set SPI clock rate to 20MHz for data transfer |
zkimike | 2:92f4e0620788 | 19 | _transfer_sck = 30000000; |
dkato | 0:4bc3a3f17825 | 20 | } |
dkato | 0:4bc3a3f17825 | 21 | |
dkato | 0:4bc3a3f17825 | 22 | /** |
dkato | 0:4bc3a3f17825 | 23 | * Check if a SD is connected |
dkato | 0:4bc3a3f17825 | 24 | * |
dkato | 0:4bc3a3f17825 | 25 | * @return true if a SD is connected |
dkato | 0:4bc3a3f17825 | 26 | */ |
dkato | 0:4bc3a3f17825 | 27 | bool connected() { |
dkato | 0:4bc3a3f17825 | 28 | if (_sd_cd.read() != 0) { |
dkato | 0:4bc3a3f17825 | 29 | _connect = false; |
dkato | 0:4bc3a3f17825 | 30 | } |
dkato | 0:4bc3a3f17825 | 31 | return _connect; |
dkato | 0:4bc3a3f17825 | 32 | } |
dkato | 0:4bc3a3f17825 | 33 | |
dkato | 0:4bc3a3f17825 | 34 | /** |
dkato | 0:4bc3a3f17825 | 35 | * Try to connect to a SD |
dkato | 0:4bc3a3f17825 | 36 | * |
dkato | 0:4bc3a3f17825 | 37 | * @return true if connection was successful |
dkato | 0:4bc3a3f17825 | 38 | */ |
dkato | 0:4bc3a3f17825 | 39 | bool connect() { |
dkato | 0:4bc3a3f17825 | 40 | if (_sd_cd.read() == 0) { |
dkato | 0:4bc3a3f17825 | 41 | _connect = true; |
dkato | 0:4bc3a3f17825 | 42 | } else { |
dkato | 0:4bc3a3f17825 | 43 | _connect = false; |
dkato | 0:4bc3a3f17825 | 44 | } |
dkato | 0:4bc3a3f17825 | 45 | return _connect; |
dkato | 0:4bc3a3f17825 | 46 | } |
dkato | 0:4bc3a3f17825 | 47 | |
dkato | 0:4bc3a3f17825 | 48 | |
dkato | 0:4bc3a3f17825 | 49 | private: |
dkato | 0:4bc3a3f17825 | 50 | DigitalIn _sd_cd; |
dkato | 0:4bc3a3f17825 | 51 | bool _connect; |
dkato | 0:4bc3a3f17825 | 52 | }; |
dkato | 0:4bc3a3f17825 | 53 | |
dkato | 0:4bc3a3f17825 | 54 | #endif |