diff options
Diffstat (limited to 'firmware')
| -rw-r--r-- | firmware/main.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/firmware/main.c b/firmware/main.c index dfd5577..89473de 100644 --- a/firmware/main.c +++ b/firmware/main.c @@ -107,9 +107,9 @@ void SSI0IntHandler(void) { if(!ROM_uDMAChannelIsEnabled(11)){
/* A TX DMA transfer was completed */
- /* FIXME */
+ /* FIXME actually, just set a flag here and kick off when all four controllers signal completion.*/
/* Wait 1.2ms for the WS2801s to latch (the datasheet specifies at least 500µs) */
- SysCtlDelay(60000);
+ SysCtlDelay(20000);
kickoff_transfers();
}
}
@@ -244,12 +244,6 @@ int main(void) { GPIOPinConfigure(GPIO_PA5_SSI0TX);
ROM_GPIOPinTypeSSI(GPIO_PORTA_BASE, GPIO_PIN_2 | GPIO_PIN_5);
- /* Configure SSI0..3 for the ws2801's SPI-like protocol */
- ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI0);
- ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI1);
- ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI2);
- ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI3);
-
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
GPIOPinConfigure(GPIO_PB4_SSI2CLK);
GPIOPinConfigure(GPIO_PB7_SSI2TX);
@@ -263,13 +257,19 @@ int main(void) { ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
GPIOPinConfigure(GPIO_PF2_SSI1CLK);
GPIOPinConfigure(GPIO_PF1_SSI1TX);
- ROM_GPIOPinTypeSSI(GPIO_PORTF_BASE, GPIO_PIN_0 | GPIO_PIN_3);
+ ROM_GPIOPinTypeSSI(GPIO_PORTF_BASE, GPIO_PIN_2 | GPIO_PIN_1);
+
+ /* Configure SSI0..3 for the ws2801's SPI-like protocol */
+ ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI0);
+ ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI1);
+ ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI2);
+ ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI3);
/* 200kBd */
- SSIConfigSetExpClk(SSI0_BASE, ROM_SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 200000, 8);
- SSIConfigSetExpClk(SSI1_BASE, ROM_SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 200000, 8);
- SSIConfigSetExpClk(SSI2_BASE, ROM_SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 200000, 8);
- SSIConfigSetExpClk(SSI3_BASE, ROM_SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 200000, 8);
+ SSIConfigSetExpClk(SSI0_BASE, ROM_SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 1000000, 8);
+ SSIConfigSetExpClk(SSI1_BASE, ROM_SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 1000000, 8);
+ SSIConfigSetExpClk(SSI2_BASE, ROM_SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 1000000, 8);
+ SSIConfigSetExpClk(SSI3_BASE, ROM_SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 1000000, 8);
/* Configure the µDMA controller for use by the SPI interface */
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UDMA);
|