RedBearLab / Mbed 2 deprecated SPI_Demo_nRF51822

The program demonstrates how to implement SPI on RedBearLab nRF51822 platform

Dependencies:   mbed

The program demonstrates how to implement SPI on RedBearLab nRF51822 platform.

main.cpp@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?

UserRevisionLine numberNew 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 0:281fa0c39c15 20 #include "mbed.h"
RedBearLab 1:a7087bcd5c28 21 #include "spi_master.h"
RedBearLab 0:281fa0c39c15 22
RedBearLab 0:281fa0c39c15 23 DigitalOut spi_cs(P0_14);//D10
RedBearLab 0:281fa0c39c15 24
RedBearLab 0:281fa0c39c15 25 SPIClass SPI1(NRF_SPI1);
RedBearLab 0:281fa0c39c15 26
RedBearLab 0:281fa0c39c15 27 //SPI spi(P0_20, P0_22, P0_25);//MOSI, MISO, SCLK
RedBearLab 0:281fa0c39c15 28 //SPI spi(P0_12, P0_13, P0_15);//D11, D12, D13
RedBearLab 0:281fa0c39c15 29
RedBearLab 0:281fa0c39c15 30
RedBearLab 0:281fa0c39c15 31
RedBearLab 0:281fa0c39c15 32 Serial pc(USBTX, USBRX);
RedBearLab 0:281fa0c39c15 33
RedBearLab 0:281fa0c39c15 34 void Flash_Buff_WriteBytes(uint16_t addr, uint8_t *pbuf, uint16_t len)
RedBearLab 0:281fa0c39c15 35 {
RedBearLab 0:281fa0c39c15 36 uint16_t index;
RedBearLab 0:281fa0c39c15 37
RedBearLab 0:281fa0c39c15 38 spi_cs = 0;
RedBearLab 0:281fa0c39c15 39 wait_us(200);
RedBearLab 0:281fa0c39c15 40
RedBearLab 0:281fa0c39c15 41 SPI1.transfer(0x84);
RedBearLab 0:281fa0c39c15 42 SPI1.transfer(0x00);
RedBearLab 0:281fa0c39c15 43 SPI1.transfer((uint8_t)(addr>>8));
RedBearLab 0:281fa0c39c15 44 SPI1.transfer((uint8_t)addr);
RedBearLab 0:281fa0c39c15 45 for(index=0; index<len; index++)
RedBearLab 0:281fa0c39c15 46 {
RedBearLab 0:281fa0c39c15 47 SPI1.transfer(*pbuf);
RedBearLab 0:281fa0c39c15 48 pbuf++;
RedBearLab 0:281fa0c39c15 49 }
RedBearLab 0:281fa0c39c15 50
RedBearLab 0:281fa0c39c15 51 wait_us(200);
RedBearLab 0:281fa0c39c15 52 spi_cs = 1;
RedBearLab 0:281fa0c39c15 53 }
RedBearLab 0:281fa0c39c15 54
RedBearLab 0:281fa0c39c15 55 void Flash_Buff_ReadBytes(uint16_t addr, uint8_t *pbuf, uint16_t len)
RedBearLab 0:281fa0c39c15 56 {
RedBearLab 0:281fa0c39c15 57 uint16_t index;
RedBearLab 0:281fa0c39c15 58
RedBearLab 0:281fa0c39c15 59 spi_cs = 0;
RedBearLab 0:281fa0c39c15 60 wait_us(200);
RedBearLab 0:281fa0c39c15 61
RedBearLab 0:281fa0c39c15 62 SPI1.transfer(0xD1);
RedBearLab 0:281fa0c39c15 63 SPI1.transfer(0x00);
RedBearLab 0:281fa0c39c15 64 SPI1.transfer((uint8_t)(addr>>8));
RedBearLab 0:281fa0c39c15 65 SPI1.transfer((uint8_t)addr);
RedBearLab 0:281fa0c39c15 66 for(index=0; index<len; index++)
RedBearLab 0:281fa0c39c15 67 {
RedBearLab 0:281fa0c39c15 68 *pbuf = SPI1.transfer(0x00);
RedBearLab 0:281fa0c39c15 69 pbuf++;
RedBearLab 0:281fa0c39c15 70 }
RedBearLab 0:281fa0c39c15 71
RedBearLab 0:281fa0c39c15 72 wait_us(200);
RedBearLab 0:281fa0c39c15 73 spi_cs = 1;
RedBearLab 0:281fa0c39c15 74 }
RedBearLab 0:281fa0c39c15 75
RedBearLab 0:281fa0c39c15 76 uint8_t i;
RedBearLab 0:281fa0c39c15 77 uint8_t wt_buf[7] = {'H','e','l','l', 'o', '\r', '\n'};
RedBearLab 0:281fa0c39c15 78 uint8_t rd_buf[7];
RedBearLab 0:281fa0c39c15 79
RedBearLab 0:281fa0c39c15 80 int main(void)
RedBearLab 0:281fa0c39c15 81 {
RedBearLab 0:281fa0c39c15 82 pc.baud(9600);
RedBearLab 0:281fa0c39c15 83 wait(8);
RedBearLab 0:281fa0c39c15 84 spi_cs = 1;
RedBearLab 0:281fa0c39c15 85 pc.printf("SPI Demo Start \r\n");
RedBearLab 0:281fa0c39c15 86
RedBearLab 0:281fa0c39c15 87 //SPI1.begin();
RedBearLab 0:281fa0c39c15 88 SPI1.begin(P0_15, P0_12, P0_13);
RedBearLab 0:281fa0c39c15 89
RedBearLab 0:281fa0c39c15 90 wait(1);
RedBearLab 0:281fa0c39c15 91 Flash_Buff_WriteBytes(0, wt_buf, 7);
RedBearLab 0:281fa0c39c15 92 while(1)
RedBearLab 0:281fa0c39c15 93 {
RedBearLab 0:281fa0c39c15 94 memset(rd_buf, 0x00, 7);
RedBearLab 0:281fa0c39c15 95 Flash_Buff_ReadBytes(0, rd_buf, 7);
RedBearLab 0:281fa0c39c15 96 for(i=0; i<7; i++)
RedBearLab 0:281fa0c39c15 97 pc.putc(rd_buf[i]);
RedBearLab 0:281fa0c39c15 98 wait(1);
RedBearLab 0:281fa0c39c15 99 }
RedBearLab 0:281fa0c39c15 100 }
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