The program demonstrates how to implement SPI on RedBearLab nRF51822 platform
Dependencies: mbed
The program demonstrates how to implement SPI on RedBearLab nRF51822 platform.
spi_master.h@1:a7087bcd5c28, 2016-01-07 (annotated)
- Committer:
- RedBearLab
- Date:
- Thu Jan 07 02:56:30 2016 +0000
- Revision:
- 1:a7087bcd5c28
- Parent:
- 0:281fa0c39c15
Update libraries.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
RedBearLab | 0:281fa0c39c15 | 1 | /* |
RedBearLab | 0:281fa0c39c15 | 2 | |
RedBearLab | 0:281fa0c39c15 | 3 | Copyright (c) 2012-2014 RedBearLab |
RedBearLab | 0:281fa0c39c15 | 4 | |
RedBearLab | 0:281fa0c39c15 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy of this software |
RedBearLab | 0:281fa0c39c15 | 6 | and associated documentation files (the "Software"), to deal in the Software without restriction, |
RedBearLab | 0:281fa0c39c15 | 7 | including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, |
RedBearLab | 0:281fa0c39c15 | 8 | and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, |
RedBearLab | 0:281fa0c39c15 | 9 | subject to the following conditions: |
RedBearLab | 0:281fa0c39c15 | 10 | The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. |
RedBearLab | 0:281fa0c39c15 | 11 | |
RedBearLab | 0:281fa0c39c15 | 12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, |
RedBearLab | 0:281fa0c39c15 | 13 | INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR |
RedBearLab | 0:281fa0c39c15 | 14 | PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE |
RedBearLab | 0:281fa0c39c15 | 15 | FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
RedBearLab | 0:281fa0c39c15 | 16 | ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
RedBearLab | 0:281fa0c39c15 | 17 | |
RedBearLab | 0:281fa0c39c15 | 18 | */ |
RedBearLab | 0:281fa0c39c15 | 19 | |
RedBearLab | 1:a7087bcd5c28 | 20 | #ifndef _SPI_MASTER_H_ |
RedBearLab | 1:a7087bcd5c28 | 21 | #define _SPI_MASTER_H_ |
RedBearLab | 0:281fa0c39c15 | 22 | |
RedBearLab | 0:281fa0c39c15 | 23 | #include "mbed.h" |
RedBearLab | 0:281fa0c39c15 | 24 | |
RedBearLab | 0:281fa0c39c15 | 25 | #define SPI_FREQUENCY_125K 0x02000000UL |
RedBearLab | 0:281fa0c39c15 | 26 | #define SPI_FREQUENCY_250K 0x04000000UL |
RedBearLab | 0:281fa0c39c15 | 27 | #define SPI_FREQUENCY_500K 0x08000000UL |
RedBearLab | 0:281fa0c39c15 | 28 | #define SPI_FREQUENCY_1M 0x10000000UL |
RedBearLab | 0:281fa0c39c15 | 29 | #define SPI_FREQUENCY_2M 0x20000000UL |
RedBearLab | 0:281fa0c39c15 | 30 | #define SPI_FREQUENCY_4M 0x40000000UL |
RedBearLab | 0:281fa0c39c15 | 31 | #define SPI_FREQUENCY_8M 0x80000000UL |
RedBearLab | 0:281fa0c39c15 | 32 | |
RedBearLab | 0:281fa0c39c15 | 33 | #define SPI_125K 0 |
RedBearLab | 0:281fa0c39c15 | 34 | #define SPI_250K 1 |
RedBearLab | 0:281fa0c39c15 | 35 | #define SPI_500K 2 |
RedBearLab | 0:281fa0c39c15 | 36 | #define SPI_1M 3 |
RedBearLab | 0:281fa0c39c15 | 37 | #define SPI_2M 4 |
RedBearLab | 0:281fa0c39c15 | 38 | #define SPI_4M 5 |
RedBearLab | 0:281fa0c39c15 | 39 | #define SPI_8M 6 |
RedBearLab | 0:281fa0c39c15 | 40 | |
RedBearLab | 0:281fa0c39c15 | 41 | #define SPI_MODE0 0 |
RedBearLab | 0:281fa0c39c15 | 42 | #define SPI_MODE1 1 |
RedBearLab | 0:281fa0c39c15 | 43 | #define SPI_MODE2 2 |
RedBearLab | 0:281fa0c39c15 | 44 | #define SPI_MODE3 3 |
RedBearLab | 0:281fa0c39c15 | 45 | |
RedBearLab | 0:281fa0c39c15 | 46 | #define CS P0_14 |
RedBearLab | 0:281fa0c39c15 | 47 | #define SCK P0_25 |
RedBearLab | 0:281fa0c39c15 | 48 | #define MOSI P0_20 |
RedBearLab | 0:281fa0c39c15 | 49 | #define MISO P0_22 |
RedBearLab | 0:281fa0c39c15 | 50 | |
RedBearLab | 0:281fa0c39c15 | 51 | typedef enum{ |
RedBearLab | 0:281fa0c39c15 | 52 | |
RedBearLab | 0:281fa0c39c15 | 53 | MSBFIRST = 0, |
RedBearLab | 0:281fa0c39c15 | 54 | LSBFIRST = 1 |
RedBearLab | 0:281fa0c39c15 | 55 | |
RedBearLab | 0:281fa0c39c15 | 56 | }BitOrder; |
RedBearLab | 0:281fa0c39c15 | 57 | |
RedBearLab | 0:281fa0c39c15 | 58 | class SPIClass |
RedBearLab | 0:281fa0c39c15 | 59 | { |
RedBearLab | 0:281fa0c39c15 | 60 | public: |
RedBearLab | 0:281fa0c39c15 | 61 | SPIClass(NRF_SPI_Type *_spi); |
RedBearLab | 0:281fa0c39c15 | 62 | |
RedBearLab | 0:281fa0c39c15 | 63 | void begin(); |
RedBearLab | 0:281fa0c39c15 | 64 | void begin(uint32_t sck, uint32_t mosi, uint32_t miso); |
RedBearLab | 0:281fa0c39c15 | 65 | uint8_t transfer(uint8_t data); |
RedBearLab | 0:281fa0c39c15 | 66 | void endTransfer(); |
RedBearLab | 0:281fa0c39c15 | 67 | |
RedBearLab | 0:281fa0c39c15 | 68 | void setSPIMode( uint8_t mode ); |
RedBearLab | 0:281fa0c39c15 | 69 | void setFrequency(uint8_t speed ); |
RedBearLab | 0:281fa0c39c15 | 70 | void setBitORDER( BitOrder bit); |
RedBearLab | 0:281fa0c39c15 | 71 | void setCPHA( bool trailing); |
RedBearLab | 0:281fa0c39c15 | 72 | void setCPOL( bool active_low); |
RedBearLab | 0:281fa0c39c15 | 73 | |
RedBearLab | 0:281fa0c39c15 | 74 | |
RedBearLab | 0:281fa0c39c15 | 75 | private: |
RedBearLab | 0:281fa0c39c15 | 76 | NRF_SPI_Type *spi; |
RedBearLab | 0:281fa0c39c15 | 77 | |
RedBearLab | 0:281fa0c39c15 | 78 | uint32_t SCK_Pin; |
RedBearLab | 0:281fa0c39c15 | 79 | uint32_t MOSI_Pin; |
RedBearLab | 0:281fa0c39c15 | 80 | uint32_t MISO_Pin; |
RedBearLab | 0:281fa0c39c15 | 81 | |
RedBearLab | 0:281fa0c39c15 | 82 | }; |
RedBearLab | 0:281fa0c39c15 | 83 | |
RedBearLab | 0:281fa0c39c15 | 84 | #endif |