diff options
Diffstat (limited to 'testhal/AVR/SPI/slave.c')
-rw-r--r-- | testhal/AVR/SPI/slave.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/testhal/AVR/SPI/slave.c b/testhal/AVR/SPI/slave.c new file mode 100644 index 000000000..eb05f5180 --- /dev/null +++ b/testhal/AVR/SPI/slave.c @@ -0,0 +1,82 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
+ 2011,2012 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT 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 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "ch.h"
+#include "hal.h"
+#include <util/delay.h>
+#include "chprintf.h"
+
+#define SPI_ROLE SPI_ROLE_SLAVE
+// #define SPI_ROLE SPI_ROLE_MASTER
+#if (SPI_ROLE == SPI_ROLE_MASTER)
+ #define ROLE "Master"
+ char msg[] = "Message from master\r\n";
+#else
+ #define ROLE "Slave"
+ char msg[] = "Message from slave\r\n";
+#endif
+
+void spicallback(SPIDriver *spip){
+ chSequentialStreamPut(&SD1, '.');
+ spip->txbuf = 0; // terminating null
+}
+
+/*
+ * Application entry point.
+ */
+int main(void) {
+
+/*
+ * SPI interface configuration
+ */
+ static SPIConfig spicfg = {
+ SPI_ROLE,
+ IOPORT2,
+ SPI1_SS,
+ SPI_MODE_0,
+ SPI_MSB_FIRST,
+ SPI_SCK_FOSC_128,
+ spicallback
+ };
+
+ /*
+ * System initializations.
+ * - HAL initialization, this also initializes the configured device drivers
+ * and performs the board-specific initializations.
+ * - Kernel initialization, the main() function becomes a thread and the
+ * RTOS is active.
+ */
+
+ halInit();
+ chSysInit();
+
+ spiStart(&SPID1, &spicfg);
+ sdStart(&SD1, NULL);
+
+ chprintf((BaseSequentialStream *) &SD1, "Start %s\r\n", role);
+
+ while(1) {
+ char buf[24];
+
+ spiExchange(&SPID1, sizeof(msg), msg, buf);
+ chprintf((BaseSequentialStream *) &SD1,"%s: %s\r\n", role, buf);
+
+ }
+}
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