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diff --git a/demos/STM32/RT-STM32F407-DISCOVERY-RTT+SystemView/main.c b/demos/STM32/RT-STM32F407-DISCOVERY-RTT+SystemView/main.c
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+++ b/demos/STM32/RT-STM32F407-DISCOVERY-RTT+SystemView/main.c
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+/*
+ ChibiOS - Copyright (C) 2006..2018 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 "rt_test_root.h"
+#include "oslib_test_root.h"
+#include "SEGGER_SYSVIEW_ChibiOS.h"
+#include "SEGGER_RTT_streams.h"
+
+/*
+ * This is a periodic thread that does absolutely nothing except flashing
+ * a LED.
+ */
+static THD_WORKING_AREA(waThread1, 128);
+static THD_FUNCTION(Thread1, arg) {
+
+ (void)arg;
+ chRegSetThreadName("blinker");
+ while (true) {
+ palSetPad(GPIOD, GPIOD_LED3); /* Orange. */
+ chThdSleepMilliseconds(500);
+ palClearPad(GPIOD, GPIOD_LED3); /* Orange. */
+ chThdSleepMilliseconds(500);
+ }
+}
+
+/*
+ * Application entry point.
+ */
+int main(void) {
+
+ /*
+ * 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();
+
+ /*
+ * This is optional. You need to initialize this if you will be using the
+ * RTT sequential streams (RTTD0). You *don't* need to use them; you can
+ * use RTT directly (call SEGGER_RTT_xxxx) without any initialization.
+ *
+ *
+ * Initialize RTT (channel 0). The output can be seen on Telnet por 19201.
+ */
+ rttInit();
+ rttSetUpFlags(&RTTD0, RTT_MODE_FLAGS_BLOCK_IF_FIFO_FULL);
+
+ /*
+ * Start SystemView
+ */
+ SYSVIEW_ChibiOS_Start(STM32_SYSCLK, STM32_SYSCLK, "I#44=OSTick,I#54=USART2");
+
+ /*
+ * Activates the serial driver 2 using the driver default configuration.
+ * PA2(TX) and PA3(RX) are routed to USART2.
+ */
+ sdStart(&SD2, NULL);
+ palSetPadMode(GPIOA, 2, PAL_MODE_ALTERNATE(7));
+ palSetPadMode(GPIOA, 3, PAL_MODE_ALTERNATE(7));
+
+ streamWrite(&SD2, (const uint8_t *)"Hello From SD2!\r\n", 17);
+ streamWrite(&RTTD0, (const uint8_t *)"Hello From RTT!\r\n", 17);
+
+ /*
+ * Creates the example thread.
+ */
+ chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
+
+ /*
+ * Normal main() thread activity, in this demo it does nothing except
+ * sleeping in a loop and check the button state.
+ */
+ while (true) {
+ if (palReadPad(GPIOA, GPIOA_BUTTON)) {
+ SEGGER_SYSVIEW_PrintfHost("Test begins with output on SD2\r\n");
+ test_execute((BaseSequentialStream *)&SD2, &rt_test_suite);
+ test_execute((BaseSequentialStream *)&SD2, &oslib_test_suite);
+
+ SEGGER_SYSVIEW_PrintfHost("Test begins with output on RTT\r\n");
+ test_execute((BaseSequentialStream *)&RTTD0, &rt_test_suite);
+ test_execute((BaseSequentialStream *)&RTTD0, &oslib_test_suite);
+ }
+ chThdSleepMilliseconds(500);
+ }
+}