wn/tetris
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

add highscore display

Browse Source
This commit is contained in:
Wolfgang Hottgenroth
2024-04-19 11:38:32 +02:00
parent 7933aa46ae
commit b400431607
12 changed files with 134 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
game-ctrl/spi.c
View File

@ -3,7 +3,7 @@
void spiInit() {
// SPI in master mode, most significant bit first
UCB0CTL0 = UCMST | UCMSB;
UCB0CTL0 = UCCKPH | UCMST | UCMSB;
// SPI timing config
UCB0CTL1 = UCSSEL_3;
// Faster than 8 ends up in strange communication errors
@ -19,25 +19,25 @@ void spiInit() {
// BIT7: UCB0SIMO
P1SEL |= BIT5 | BIT6 | BIT7;
P1SEL2 |= BIT5 | BIT6 | BIT7;
P1DIR |= BIT5 | BIT7;
// P1DIR |= BIT5 | BIT7;
// Device Select Lines: 0: Canvas, 1: Display, 2: Sound
P1DIR |= BIT0 | BIT1 | BIT2;
// Device Select Lines: 0: Canvas, 1: Display, 2: Sound, 4: EEPROM
P1DIR |= BIT0 | BIT1 | BIT2 | BIT4;
// Disable all of them
P1OUT |= BIT0 | BIT1 | BIT2;
P1OUT |= BIT0 | BIT1 | BIT2 | BIT4;
// enable SPI module
UCB0CTL1 &= ~UCSWRST;
}
void spiSendBegin(t_SpiDeviceSelector d) {
uint16_t bit = ((uint16_t[]){ BIT0, BIT1, BIT2 })[d];
uint16_t bit = ((uint16_t[]){ BIT0, BIT1, BIT2, BIT4 })[d];
P1OUT &= ~bit;
}
void spiSendEnd(t_SpiDeviceSelector d) {
while (UCB0STAT & UCBUSY);
uint16_t bit = ((uint16_t[]){ BIT0, BIT1, BIT2 })[d];
uint16_t bit = ((uint16_t[]){ BIT0, BIT1, BIT2, BIT4 })[d];
P1OUT |= bit;
}
@ -48,3 +48,9 @@ void spiSendOctet(uint8_t v) {
UCB0TXBUF = v;
}
uint8_t spiReceiveOctet() {
while (!(UC0IFG & UCB0RXIFG));
uint8_t v = UCB0RXBUF;
return v;
}