Update FreeRTOS demo to run in demo script

Also, minor text fixes.

Author: Mousius

apps/microtvm/ethosu/src/demo_freertos.c

@@ -44,7 +44,7 @@ static void prvDataCollectionTask(void* pvParameters);
 /* The queue used to pass data to run through our model */
 static QueueHandle_t xQueue = NULL;
 
-void main(void) {
+int main(void) {
   // Platform UART
   uart_init();
   // NPU
@@ -61,7 +61,7 @@ void main(void) {
                 mainQUEUE_INFERENCE_TASK_PRIORITY, NULL);
 
     // Data collector task
-    xTaskCreate(prvDataCollectionTask, "Data", mainQUEUE_INFERENCE_TASK_STACK_SIZE, NULL,
+    xTaskCreate(prvDataCollectionTask, "Data", mainQUEUE_DATA_TASK_STACK_SIZE, NULL,
                 mainQUEUE_DATA_TASK_PRIORITY, NULL);
 
     // Start the task scheduling
@@ -103,7 +103,7 @@ static void prvInferenceTask(void* pvParameters) {
   // Print output of inference and exit task
   printf("Running inference\n");
   struct tvmgen_default_inputs xInputs = {
-      .input = pucReceivedData,
+      .tfl_quantize = pucReceivedData,
   };
   struct tvmgen_default_outputs xOutputs = {
       .output = output,
@@ -116,7 +116,7 @@ static void prvInferenceTask(void* pvParameters) {
   ethosu_release_driver(xDriver);
 
   // Calculate index of max value
-  uint8_t ucMaxValue = 0;
+  int8_t ucMaxValue = -128;
   int32_t lMaxIndex = -1;
   for (unsigned int i = 0; i < output_len; ++i) {
     if (output[i] > ucMaxValue) {

apps/microtvm/zephyr_cmsisnn/run_demo.sh

@@ -45,7 +45,6 @@ export ARMFVP_BIN_PATH=/opt/arm/FVP_Corstone_SSE-300/models/Linux64_GCC-6.4/
 west zephyr-export
 west build
 west build -t run &> ${LOGDIR}/west.log &
-WEST_PID=$! 
 
 # Wait for "exit" keyword 
 until grep -m 1 "exit" ${LOGDIR}/west.log; do sleep 1 ; done

tests/scripts/task_cpp_unittest.sh

@@ -45,18 +45,3 @@ cd apps/bundle_deploy
 rm -rf build
 make test_dynamic test_static
 cd ../..
-
-# Test Arm(R) Cortex(R)-M55 CPU and Ethos(TM)-U55 NPU demo app
-FVP_PATH="/opt/arm/FVP_Corstone_SSE-300"
-
-# TODO(@grant-arm): Remove once ci_cpu docker image has been updated to FVP_Corstone_SSE
-if test ! -d $FVP_PATH; then
-    FVP_PATH="/opt/arm/FVP_Corstone_SSE-300_Ethos-U55"
-fi
-
-if test -d $FVP_PATH && pip3 list | grep vela; then
-    cd apps/microtvm/ethosu
-    ./run_demo.sh --fvp_path $FVP_PATH --cmake_path /opt/arm/cmake/bin/cmake
-    ./run_demo.sh --fvp_path $FVP_PATH --cmake_path /opt/arm/cmake/bin/cmake --freertos_path /opt/freertos/FreeRTOSv202112.00
-    cd ../../..
-fi

tests/scripts/task_demo_microtvm.sh

@@ -21,3 +21,12 @@ set -euxo pipefail
 pushd apps/microtvm/zephyr_cmsisnn
 ./run_demo.sh
 popd
+
+pushd apps/microtvm/ethosu
+FVP_PATH="/opt/arm/FVP_Corstone_SSE-300_Ethos-U55"
+CMAKE_PATH="/opt/arm/cmake/bin/cmake"
+FREERTOS_PATH="/opt/freertos/FreeRTOSv202112.00"
+
+./run_demo.sh --fvp_path $FVP_PATH --cmake_path $CMAKE_PATH
+./run_demo.sh --fvp_path $FVP_PATH --cmake_path $CMAKE_PATH --freertos_path $FREERTOS_PATH
+popd