Siva ram / Mbed 2 deprecated spiDMAtest

test

Dependencies:   SimpleDMA mbed-rtos mbed

Fork of spiDMAtest by Shreesha S

dmaSPIslave.h@1:3cceef118195, 2015-07-16 (annotated)

Committer:
shreeshas95
Date:
Thu Jul 16 05:19:02 2015 +0000
Revision:
1:3cceef118195
Parent:
0:f0f5102ed9ca
Child:
2:16545dbc88ae
working with tiva checked

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shreeshas95 0:f0f5102ed9ca 1 #ifdef TARGET_KL46Z
shreeshas95 0:f0f5102ed9ca 2 class dmaSPISlave : public SPISlave{
shreeshas95 0:f0f5102ed9ca 3 public:
shreeshas95 0:f0f5102ed9ca 4 dmaSPISlave(PinName mosi, PinName miso, PinName sclk, PinName ssel) : SPISlave(mosi, miso, sclk, ssel){
shreeshas95 0:f0f5102ed9ca 5 // trigger appropriate spi for dma
shreeshas95 0:f0f5102ed9ca 6 if(_spi.spi == SPI0){
shreeshas95 0:f0f5102ed9ca 7 read_dma.trigger(Trigger_SPI0_RX);
shreeshas95 0:f0f5102ed9ca 8 }
shreeshas95 0:f0f5102ed9ca 9 else{
shreeshas95 0:f0f5102ed9ca 10 read_dma.trigger(Trigger_SPI1_RX);
shreeshas95 0:f0f5102ed9ca 11 }
shreeshas95 0:f0f5102ed9ca 12
shreeshas95 0:f0f5102ed9ca 13 // set source for spi slave dma : mosi
shreeshas95 0:f0f5102ed9ca 14 read_dma.source(&_spi.spi->DL, false);
shreeshas95 0:f0f5102ed9ca 15 }
shreeshas95 0:f0f5102ed9ca 16
shreeshas95 1:3cceef118195 17 void bulkRead_init(uint8_t *read_data, int len, void (*fun)(void) ){
shreeshas95 0:f0f5102ed9ca 18 // acquire();
shreeshas95 0:f0f5102ed9ca 19 _spi.spi->C2 |= SPI_C2_RXDMAE_MASK;
shreeshas95 0:f0f5102ed9ca 20
shreeshas95 0:f0f5102ed9ca 21 // auto increment is true
shreeshas95 0:f0f5102ed9ca 22 read_dma.destination(read_data, true);
shreeshas95 0:f0f5102ed9ca 23
shreeshas95 1:3cceef118195 24 // specify length
shreeshas95 1:3cceef118195 25 length = len;
shreeshas95 1:3cceef118195 26
shreeshas95 1:3cceef118195 27 // attach interrupt function
shreeshas95 1:3cceef118195 28 read_dma.attach(fun);
shreeshas95 1:3cceef118195 29
shreeshas95 1:3cceef118195 30 // _spi.spi->C2 &= ~(SPI_C2_RXDMAE_MASK);
shreeshas95 1:3cceef118195 31 }
shreeshas95 1:3cceef118195 32
shreeshas95 1:3cceef118195 33 void bulkRead_start(){
shreeshas95 0:f0f5102ed9ca 34 // start the read_dma
shreeshas95 0:f0f5102ed9ca 35 read_dma.start(length);
shreeshas95 1:3cceef118195 36 }
shreeshas95 0:f0f5102ed9ca 37
shreeshas95 0:f0f5102ed9ca 38 private:
shreeshas95 1:3cceef118195 39 int length;
shreeshas95 0:f0f5102ed9ca 40 SimpleDMA read_dma;
shreeshas95 0:f0f5102ed9ca 41 };
shreeshas95 0:f0f5102ed9ca 42 #endif