From 53c475eeb4dc5c8f1504559d1912b1e33c6e1e14 Mon Sep 17 00:00:00 2001
From: Giovanni Di Sirio <gdisirio@gmail.com>
Date: Sun, 17 Sep 2017 07:07:42 +0000
Subject: Added STM32 SPI multi demo.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@10604 35acf78f-673a-0410-8e92-d51de3d6d3f4
---
 testhal/STM32/multi/SPI/main.c | 141 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100755 testhal/STM32/multi/SPI/main.c

(limited to 'testhal/STM32/multi/SPI/main.c')

diff --git a/testhal/STM32/multi/SPI/main.c b/testhal/STM32/multi/SPI/main.c
new file mode 100755
index 000000000..fd37eb4a5
--- /dev/null
+++ b/testhal/STM32/multi/SPI/main.c
@@ -0,0 +1,141 @@
+/*
+    ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+#include "ch.h"
+#include "hal.h"
+
+#include "portab.h"
+
+/*
+ * SPI TX and RX buffers.
+ */
+static uint8_t txbuf[512];
+static uint8_t rxbuf[512];
+
+/*
+ * SPI bus contender 1.
+ */
+static THD_WORKING_AREA(spi_thread_1_wa, 256);
+static THD_FUNCTION(spi_thread_1, p) {
+
+  (void)p;
+  chRegSetThreadName("SPI thread 1");
+  while (true) {
+    spiAcquireBus(&SPID2);              /* Acquire ownership of the bus.    */
+    palWriteLine(PORTAB_LINE_LED1, PORTAB_LED_ON);
+    spiStart(&SPID2, &hs_spicfg);       /* Setup transfer parameters.       */
+    spiSelect(&SPID2);                  /* Slave Select assertion.          */
+    spiExchange(&SPID2, 512,
+                txbuf, rxbuf);          /* Atomic transfer operations.      */
+    spiUnselect(&SPID2);                /* Slave Select de-assertion.       */
+    spiReleaseBus(&SPID2);              /* Ownership release.               */
+  }
+}
+
+/*
+ * SPI bus contender 2.
+ */
+static THD_WORKING_AREA(spi_thread_2_wa, 256);
+static THD_FUNCTION(spi_thread_2, p) {
+
+  (void)p;
+  chRegSetThreadName("SPI thread 2");
+  while (true) {
+    spiAcquireBus(&SPID2);              /* Acquire ownership of the bus.    */
+    palWriteLine(PORTAB_LINE_LED1, PORTAB_LED_OFF);
+    spiStart(&SPID2, &ls_spicfg);       /* Setup transfer parameters.       */
+    spiSelect(&SPID2);                  /* Slave Select assertion.          */
+    spiExchange(&SPID2, 512,
+                txbuf, rxbuf);          /* Atomic transfer operations.      */
+    spiUnselect(&SPID2);                /* Slave Select de-assertion.       */
+    spiReleaseBus(&SPID2);              /* Ownership release.               */
+  }
+}
+
+#if defined(PORTAB_LINE_LED2)
+/*
+ * LED blinker thread, times are in milliseconds.
+ */
+static THD_WORKING_AREA(waThread1, 128);
+static THD_FUNCTION(Thread1, arg) {
+  (void)arg;
+  chRegSetThreadName("blinker");
+  while (true) {
+    systime_t time = palReadLine(PORTAB_LINE_BUTTON) == PORTAB_BUTTON_PRESSED ? 250 : 500;
+    palToggleLine(PORTAB_LINE_LED2);
+    chThdSleepMilliseconds(time);
+  }
+}
+#endif
+
+/*
+ * Application entry point.
+ */
+int main(void) {
+  unsigned i;
+
+  /*
+   * 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();
+
+  /*
+   * SPI2 I/O pins setup.
+   */
+  palSetPadMode(GPIOB, 13, PAL_MODE_ALTERNATE(0) |
+                           PAL_STM32_OSPEED_HIGHEST);       /* New SCK.     */
+  palSetPadMode(GPIOB, 14, PAL_MODE_ALTERNATE(0) |
+                           PAL_STM32_OSPEED_HIGHEST);       /* New MISO.    */
+  palSetPadMode(GPIOB, 15, PAL_MODE_ALTERNATE(0) |
+                           PAL_STM32_OSPEED_HIGHEST);       /* New MOSI.    */
+  palSetPad(GPIOB, 12);
+  palSetPadMode(GPIOB, 12, PAL_MODE_OUTPUT_PUSHPULL |
+                           PAL_STM32_OSPEED_HIGHEST);       /* New CS.      */
+
+  /*
+   * Prepare transmit pattern.
+   */
+  for (i = 0; i < sizeof(txbuf); i++)
+    txbuf[i] = (uint8_t)i;
+
+  /*
+   * Starting the transmitter and receiver threads.
+   */
+  chThdCreateStatic(spi_thread_1_wa, sizeof(spi_thread_1_wa),
+                    NORMALPRIO + 1, spi_thread_1, NULL);
+  chThdCreateStatic(spi_thread_2_wa, sizeof(spi_thread_2_wa),
+                    NORMALPRIO + 1, spi_thread_2, NULL);
+
+#if defined(PORTAB_LINE_LED2)
+  /*
+   * Creates the blinker thread.
+   */
+  chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
+#endif
+
+  /*
+   * Normal main() thread activity, in this demo it does nothing.
+   */
+  while (true) {
+    chThdSleepMilliseconds(500);
+  }
+  return 0;
+}
-- 
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