main.cpp

00001 #include "mbed.h"
00002 
00003 DigitalOut myled(LED1);
00004 InterruptIn event(USER_BUTTON);
00005 
00006 event_callback_t spiCb;
00007 
00008 #if DEVICE_SPI_ASYNCH
00009 #define SPI_S(obj)    (( struct spi_s *)(&(obj->spi)))
00010 #else
00011 #define SPI_S(obj)    (( struct spi_s *)(obj))
00012 #endif
00013 
00014 bool pressed = false;
00015 bool transferDone = false;
00016 
00017 void KeyPressed()
00018 {
00019     pressed = true;
00020 }
00021 
00022 void SPIDone(int events)
00023 {
00024     transferDone = true;
00025 }
00026 
00027 int main() {
00028     event.fall(&KeyPressed);
00029     
00030     spiCb.attach(SPIDone);
00031     
00032     while(1) {
00033         myled = 1; // LED is ON
00034         wait(0.2); // 200 ms
00035         myled = 0; // LED is OFF
00036         wait(1.0); // 1 sec
00037         if (pressed) {
00038             myled = 1;
00039             SPI *s = new SPI(PB_5, PB_4, PB_3);
00040             s->frequency(100000);
00041             
00042             struct spi_s *spiobj = SPI_S(((spi_t *)( (char *)s+4) ));
00043             SPI_HandleTypeDef *handle = &(spiobj->handle);
00044             
00045             
00046             for(int i = 0; i < 400000000; i++) {
00047                 uint8_t send[] = { 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x00 };
00048                 uint8_t rcv[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
00049                 //s->write(0xff);
00050                 HAL_SPI_Transmit(handle, send, 10, 10);
00051                 //HAL_SPI_Receive(handle, rcv, 10, 10);
00052                 
00053             }
00054             //s->transfer((uint8_t*)"aaa", 3, (uint8_t*)NULL, 0, spiCb, SPI_EVENT_COMPLETE);
00055             // s->transfer((uint8_t*)"aaa", 3, (uint8_t*)NULL, 0, spiCb);
00056             delete s;
00057             deepsleep();
00058             pressed = false;
00059         }
00060     }
00061 }