Add Ice Tea I2C communication test

TEST_APPS/device/i2c_com/common.cpp

@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2019, Arm Limited and affiliates.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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 "common.h"
+#include <stdio.h>
+#include "drivers/DigitalOut.h"
+
+#if I2C_DEBUG_PIN_MASTER==1 || I2C_DEBUG_PIN_SLAVE==1
+
+static mbed::DigitalOut test_pin(D8);
+
+void test_pin_init()
+{
+    test_pin.write(0);
+}
+
+
+void test_pin_toggle(int count)
+{
+    int cv = test_pin.read();
+    for (int i = 0; i < count; i++) {
+        test_pin.write(cv == 0 ? 1 : 0);
+    }
+    test_pin.write(cv == 0 ? 0 : 1);
+}
+
+
+bool test_check(bool condition, const char *condition_str, const char *file, int line)
+{
+    if (!condition) {
+        printf("assertion failed: %s  %s:%d\r\n", condition_str, file, line);
+        return false;
+    } else {
+        return true;
+    }
+}
+
+#endif // I2C_DEBUG_PIN_MASTER==1 || I2C_DEBUG_PIN_SLAVE==1
+
+bool test_check_message(bool condition, const char *condition_str, const char *message, const char *file, int line)
+{
+    if (!condition) {
+        printf("assertion failed: %s  %s  %s:%d\r\n", condition_str, message, file, line);
+        return false;
+    } else {
+        return true;
+    }
+}
+
+bool test_check_equal_int(int32_t expected, int32_t actual, const char *file, int line)
+{
+    if (expected != actual) {
+        printf("assertion failed: %ld != %ld  %s:%d\r\n", expected, actual, file, line);
+        return false;
+    } else {
+        return true;
+    }
+}
+
+bool test_check_equal_uint(uint32_t expected, uint32_t actual, const char *file, int line)
+{
+    if (expected != actual) {
+        printf("assertion failed: %lu != %lu  %s:%d\r\n", expected, actual, file, line);
+        return false;
+    } else {
+        return true;
+    }
+}
+
+bool test_check_uint_within(uint32_t min, uint32_t max, uint32_t actual, const char *file, int line)
+{
+    if (actual < min || actual > max) {
+        printf("assertion failed: %lu not in range (%lu,%lu) %s:%d\r\n", actual, min, max, file, line);
+        return false;
+    } else {
+        return true;
+    }
+}

TEST_APPS/device/i2c_com/common.h

@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2019, Arm Limited and affiliates.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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 "mbed.h"
+
+#ifndef I2C_TEST_COMMON_H
+#define I2C_TEST_COMMON_H
+
+
+#undef MAX
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+
+#undef MIN
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+
+// uncomment this in order to test i2c driver layer
+//#define TEST_I2C_DRIVER
+
+#define I2C_DEBUG               0
+#define I2C_DEBUG_PIN_SLAVE     0
+#define I2C_DEBUG_PIN_MASTER    0
+
+#define EMPTY_PARAM_INT (-1)
+
+// max data buffer allocated on stack, optimization for less heap usage
+#define MAX_STACK_DATA 768
+
+#define TEST_PATTERN_SIZE 100
+
+#define MASTER_1_ID     111
+#define MASTER_2_ID     222
+
+#define DEVICE_AS_MASTER   false
+#define DEVICE_AS_SLAVE    true
+
+#define I2C_ADDRESS_MASK_7BIT   (0x7F)
+#define I2C_ADDRESS_MASK_10BIT  (0x3FF)
+#define I2C_10BIT_FIRST_BYTE    (0xF0)
+
+// 7bit addressing, allowed values from 0x8 to 0x77
+#define I2C_7BIT_ADDRESS_MIN    (0x08)
+#define I2C_7BIT_ADDRESS_MAX    (0x77)
+#define I2C_7BIT_ADDRESS        (0x55)
+
+#define MAKE_7BIT_SLAVE_ADDRESS(addr)   ((I2C_ADDRESS_MASK_7BIT & addr) << 1)
+#define MAKE_7BIT_READ_ADDRESS(addr)    (((I2C_ADDRESS_MASK_7BIT & addr) << 1) | 1)
+#define MAKE_7BIT_WRITE_ADDRESS(addr)   ((I2C_ADDRESS_MASK_7BIT & addr) << 1)
+#define MAKE_10BIT_READ_ADDRESS(addr)   ((((I2C_10BIT_FIRST_BYTE | (((addr & I2C_ADDRESS_MASK_10BIT)) >> 7)) | 1) << 8) | (addr & 0xFF))
+#define MAKE_10BIT_WRITE_ADDRESS(addr)  ((((I2C_10BIT_FIRST_BYTE | (((addr & I2C_ADDRESS_MASK_10BIT)) >> 7)) & ~1) << 8) | (addr & 0xFF))
+
+void test_pin_init();
+void test_pin_toggle(int count = 1);
+
+#if I2C_DEBUG_PIN_SLAVE
+#define SLAVE_PIN_TOGGLE(n) test_pin_toggle(n)
+#else
+#define SLAVE_PIN_TOGGLE(n) (void)0
+#endif
+
+#if I2C_DEBUG_PIN_MASTER
+#define MASTER_PIN_TOGGLE(n) test_pin_toggle(n)
+#else
+#define MASTER_PIN_TOGGLE(n) (void)0
+#endif
+
+#if I2C_DEBUG
+#define I2C_DEBUG_PRINTF(...)   printf(__VA_ARGS__)
+#else
+#define I2C_DEBUG_PRINTF(...)   (void)0
+#endif
+
+bool test_check(bool condition, const char *condition_str, const char *file, int line);
+bool test_check_message(bool condition, const char *condition_str, const char *message, const char *file, int line);
+bool test_check_equal_int(int32_t expected, int32_t actual, const char *file, int line);
+bool test_check_equal_uint(uint32_t expected, uint32_t actual, const char *file, int line);
+bool test_check_uint_within(uint32_t min, uint32_t max, uint32_t actual, const char *file, int line);
+
+#define TEST_CHECK(condition)                       test_check(condition, #condition, __FILE__, __LINE__)
+#define TEST_CHECK_MESSAGE(condition, message)      test_check_message(condition, #condition, message, __FILE__, __LINE__)
+#define TEST_CHECK_EQUAL_INT(expected, actual)      test_check_equal_int(expected, actual, __FILE__, __LINE__)
+#define TEST_CHECK_EQUAL_UINT(expected, actual)     test_check_equal_uint(expected, actual, __FILE__, __LINE__)
+#define TEST_CHECK_UINT_WITHIN(min, max, actual)    test_check_uint_within(min, max, actual, __FILE__, __LINE__)
+
+template<uint32_t SS>
+class WorkerThread : public Thread {
+    unsigned char stack_mem[SS];
+public:
+    WorkerThread(osPriority priority = osPriorityNormal) : Thread(priority, SS, stack_mem) { }
+};
+
+#endif