Rob Toulson
by Rob Toulson and Tim Wilmshurst from textbook "Fast and Effective Embedded Systems Design: Applying the ARM mbed"
main.cpp@0:493e035a4a1c, 2012-10-15 (annotated)
- Committer:
- robt
- Date:
- Mon Oct 15 21:24:11 2012 +0000
- Revision:
- 0:493e035a4a1c
by Rob Toulson and Tim Wilmshurst from textbook "Fast and Effective Embedded Systems Design: Applying the ARM mbed"
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| robt | 0:493e035a4a1c | 1 | /* Program Example 7.1: Sets up the mbed as SPI master, and continuously sends |
| robt | 0:493e035a4a1c | 2 | a single byte |
| robt | 0:493e035a4a1c | 3 | */ |
| robt | 0:493e035a4a1c | 4 | #include "mbed.h" |
| robt | 0:493e035a4a1c | 5 | SPI ser_port(p11, p12, p13); // mosi, miso, sclk |
| robt | 0:493e035a4a1c | 6 | char switch_word ; //word we will send |
| robt | 0:493e035a4a1c | 7 | |
| robt | 0:493e035a4a1c | 8 | |
| robt | 0:493e035a4a1c | 9 | |
| robt | 0:493e035a4a1c | 10 | int main() { |
| robt | 0:493e035a4a1c | 11 | ser_port.format(8,0); // Setup the SPI for 8 bit data, Mode 0 operation |
| robt | 0:493e035a4a1c | 12 | ser_port.frequency(1000000); // Clock frequency is 1MHz |
| robt | 0:493e035a4a1c | 13 | while (1){ |
| robt | 0:493e035a4a1c | 14 | switch_word=0xA1; //set up word to be transmitted |
| robt | 0:493e035a4a1c | 15 | ser_port.write(switch_word); //send switch_word |
| robt | 0:493e035a4a1c | 16 | wait_us(50); |
| robt | 0:493e035a4a1c | 17 | } |
| robt | 0:493e035a4a1c | 18 | } |
| robt | 0:493e035a4a1c | 19 |