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spi separated

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This commit is contained in:
Wolfgang Hottgenroth
2024-03-28 16:48:29 +01:00
parent 33242a09c1
commit ee98ba12a3
2 changed files with 3 additions and 21 deletions
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2
sound-driver/Makefile
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@ -11,7 +11,7 @@ CFLAGS+= -g3 -ggdb -gdwarf-2
LDFLAGS=-mmcu=$(MCU) -L $(TOOLCHAIN_PREFIX)/include LDFLAGS=-mmcu=$(MCU) -L $(TOOLCHAIN_PREFIX)/include
$(ARTIFACT).elf: main.o scheduler.o psg.o sequencer.o melody.o $(ARTIFACT).elf: main.o scheduler.o spi.o psg.o sequencer.o melody.o
$(CC) -o $@ $(LDFLAGS) $^ $(CC) -o $@ $(LDFLAGS) $^
$(OBJDUMP) -D $(ARTIFACT).elf > $(ARTIFACT).txt $(OBJDUMP) -D $(ARTIFACT).elf > $(ARTIFACT).txt

22
sound-driver/main.c
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@ -2,18 +2,12 @@
#include <stdint.h> #include <stdint.h>
#include <stdlib.h> #include <stdlib.h>
#include "spi.h"
#include "psg.h" #include "psg.h"
#include "scheduler.h" #include "scheduler.h"
#include "sequencer.h" #include "sequencer.h"
#include "melody.h" #include "melody.h"
void __attribute__ ((interrupt (USCIAB0RX_VECTOR))) receive() {
if (UC0IFG & UCB0RXIFG) {
// receive an octet
}
}
int main() { int main() {
WDTCTL = WDTPW | WDTHOLD; WDTCTL = WDTPW | WDTHOLD;
@ -25,22 +19,10 @@ int main() {
BCSCTL2 = 0; BCSCTL2 = 0;
BCSCTL3 = 0; BCSCTL3 = 0;
// SPI slave
// BIT4: UCB0STE
// BIT5: UCB0CLK
// BIT6: UCB0SOMI
// BIT7: UCB0SIMO
P1SEL |= BIT4 | BIT5 | BIT6 | BIT7;
P1SEL2 |= BIT4 | BIT5 | BIT6 | BIT7;
// most significant bit first, enable STE
UCB0CTL0 = UCSYNC | UCMSB | UCMODE_2;
UCB0CTL1 = 0x00;
// enable RX interrupt
UC0IE |= UCB0RXIE;
schInit(); schInit();
spiInit();
psgInit(); psgInit();
sequencerInit(); sequencerInit();