diff options
| -rw-r--r-- | openpicc/Makefile | 1 | ||||
| -rw-r--r-- | openpicc/application/da.c | 72 | ||||
| -rw-r--r-- | openpicc/application/da.h | 7 | ||||
| -rw-r--r-- | openpicc/application/main.c | 4 | ||||
| -rw-r--r-- | openpicc/application/openpicc.h | 1 | ||||
| -rw-r--r-- | openpicc/config/board.h | 8 |
6 files changed, 90 insertions, 3 deletions
diff --git a/openpicc/Makefile b/openpicc/Makefile index 76804a7..50d07e4 100644 --- a/openpicc/Makefile +++ b/openpicc/Makefile @@ -74,6 +74,7 @@ ARM_SRC= \ application/led.c \ application/cmd.c \ application/env.c \ + application/da.c \ os/boot/Cstartup_SAM7.c \ os/core/list.c \ os/core/queue.c \ diff --git a/openpicc/application/da.c b/openpicc/application/da.c new file mode 100644 index 0000000..64cee5b --- /dev/null +++ b/openpicc/application/da.c @@ -0,0 +1,72 @@ +/* SPI DAC AD5300 Driver for OpenPICC + * (C) 2006 by Harald Welte <hwelte@hmw-consulting.de> + * All bugs added by Henryk Plötz <henryk@ploetzli.ch> (c) 2006-2007 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + + +#include "openpicc.h" +#include "board.h" + +#include <sys/types.h> +#include <lib_AT91SAM7.h> + +static const AT91PS_SPI spi = AT91C_BASE_SPI; + +void da_comp_carr(u_int8_t position) +{ + volatile int i; + + while (!(spi->SPI_SR & AT91C_SPI_TDRE)) { } + AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, OPENPICC_PIO_SS2_DT_THRESH); + /* shift four left, since it is an eight-bit value written as 16 bit xfer + bits 15 and 14 are don't care + bits 13 and 12 are mode (0 is normal operation) + bits 11 thru 4 are data + bits 3 thru 0 are don't care + */ + spi->SPI_TDR = position << 4; + while (!(spi->SPI_SR & AT91C_SPI_TDRE)) { } + for (i = 0; i < 0xff; i++) { } + AT91F_PIO_SetOutput(AT91C_BASE_PIOA, OPENPICC_PIO_SS2_DT_THRESH); +} + +void da_init(void) +{ + AT91F_SPI_CfgPMC(); + AT91F_PIO_CfgPeriph(AT91C_BASE_PIOA, + AT91C_PA13_MOSI | AT91C_PA14_SPCK, 0); + + AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, OPENPICC_PIO_SS2_DT_THRESH); + AT91F_PIO_SetOutput(AT91C_BASE_PIOA, OPENPICC_PIO_SS2_DT_THRESH); + +#if 0 + AT91F_AIC_ConfigureIt(AT91C_BASE_AIC, AT91C_ID_SPI, + OPENPCD_IRQ_PRIO_SPI, + AT91C_AIC_SRCTYPE_INT_HIGH_LEVEL, &spi_irq); + AT91G_AIC_EnableIt(AT9C_BASE_AIC, AT91C_ID_SPI); +#endif + AT91F_SPI_CfgMode(spi, AT91C_SPI_MSTR | + AT91C_SPI_PS_FIXED | AT91C_SPI_MODFDIS); + /* CPOL = 1, NCPHA = 1, CSAAT = 0, BITS = 1000, SCBR = 13 (3.69MHz), + * DLYBS = 6 (125nS), DLYBCT = 0 */ + AT91F_SPI_CfgCs(spi, 0, AT91C_SPI_CPOL | AT91C_SPI_BITS_16 | + AT91C_SPI_NCPHA | (13 << 8) | (6 << 16)); + AT91F_SPI_Enable(spi); + + da_comp_carr(DA_BASELINE); +} diff --git a/openpicc/application/da.h b/openpicc/application/da.h new file mode 100644 index 0000000..e264e2b --- /dev/null +++ b/openpicc/application/da.h @@ -0,0 +1,7 @@ +#ifndef _DA_H +#define _DA_H + +extern void da_comp_carr(u_int8_t position); +extern void da_init(void); + +#endif diff --git a/openpicc/application/main.c b/openpicc/application/main.c index 6dc9637..d69fc1e 100644 --- a/openpicc/application/main.c +++ b/openpicc/application/main.c @@ -38,6 +38,8 @@ #include "led.h" #include "env.h" #include "cmd.h" +#include "da.h" +#include "pll.h" /**********************************************************************/ static inline void prvSetupHardware (void) @@ -80,6 +82,8 @@ int main (void) vLedInit(); + da_init(); + xTaskCreate (vUSBCDCTask, (signed portCHAR *) "USB", TASK_USB_STACK, NULL, TASK_USB_PRIORITY, NULL); diff --git a/openpicc/application/openpicc.h b/openpicc/application/openpicc.h index d3575a6..1ed4273 100644 --- a/openpicc/application/openpicc.h +++ b/openpicc/application/openpicc.h @@ -32,5 +32,6 @@ typedef signed char s_int8_t; typedef signed short s_int16_t; typedef int s_int32_t; +#define DA_BASELINE 200 #endif/*__OPENPICC_H__*/ diff --git a/openpicc/config/board.h b/openpicc/config/board.h index 5a56155..065c26d 100644 --- a/openpicc/config/board.h +++ b/openpicc/config/board.h @@ -50,15 +50,17 @@ #define MCKKHz (MCK/1000) // /*-----------------*/ -/* LED declaration */ +/* Pins */ /*-----------------*/ -//#define LED_GREEN (1L<<23) #define LED_GREEN AT91C_PIO_PA25 -//#define LED_RED (1L<<20) #define LED_RED AT91C_PIO_PA12 #define LED_MASK (LED_GREEN|LED_RED) +#define OPENPICC_PIO_SS2_DT_THRESH AT91C_PIO_PA8 +#define OPENPICC_PIO_PLL_INHIBIT AT91C_PIO_PA24 +#define OPENPICC_PIO_PLL_LOCK AT91C_PIO_PA4 + /*-----------------*/ /* task priorities */ /*-----------------*/ |