Diff: source/daplink/util.c

Revision:

0:01f31e923fe2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/source/daplink/util.c	Tue Apr 07 12:55:42 2020 +0200
@@ -0,0 +1,160 @@
+/**
+ * @file    util.c
+ * @brief   Implementation of util.h
+ *
+ * DAPLink Interface Firmware
+ * Copyright (c) 2009-2016, ARM Limited, All Rights Reserved
+ * 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 <string.h>
+
+#include "util.h"
+#include "settings.h"
+#include "cortex_m.h"
+
+//remove dependency from vfs_manager
+__attribute__((weak)) void vfs_mngr_fs_remount(void) {}
+
+uint32_t util_write_hex8(char *str, uint8_t value)
+{
+    static const char nybble_chars[] = "0123456789abcdef";
+    *(str + 0) = nybble_chars[(value >> 4) & 0x0F ];
+    *(str + 1) = nybble_chars[(value >> 0) & 0x0F ];
+    return 2;
+}
+
+uint32_t util_write_hex16(char *str, uint16_t value)
+{
+    uint32_t pos = 0;
+    pos += util_write_hex8(str + pos, (value >> 8) & 0xFF);
+    pos += util_write_hex8(str + pos, (value >> 0) & 0xFF);
+    return pos;
+}
+
+uint32_t util_write_hex32(char *str, uint32_t value)
+{
+    uint32_t pos = 0;
+    pos += util_write_hex8(str + pos, (value >> 0x18) & 0xFF);
+    pos += util_write_hex8(str + pos, (value >> 0x10) & 0xFF);
+    pos += util_write_hex8(str + pos, (value >> 0x08) & 0xFF);
+    pos += util_write_hex8(str + pos, (value >> 0x00) & 0xFF);
+    return pos;
+}
+
+uint32_t util_write_uint32(char *str, uint32_t value)
+{
+    uint32_t temp_val;
+    uint64_t digits;
+    uint32_t i;
+    // Count the number of digits
+    digits = 0;
+    temp_val = value;
+
+    while (temp_val > 0) {
+        temp_val /= 10;
+        digits += 1;
+    }
+
+    if (digits <= 0) {
+        digits = 1;
+    }
+
+    // Write the number
+    for (i = 0; i < digits; i++) {
+        str[digits - i - 1] = '0' + (value % 10);
+        value /= 10;
+    }
+
+    return digits;
+}
+
+uint32_t util_write_uint32_zp(char *str, uint32_t value, uint16_t total_size)
+{
+    uint32_t size;
+    // Get the size of value
+    size = util_write_uint32(str, value);
+
+    if (size >= total_size) {
+        return size;
+    }
+
+    // Zero fill
+    memset(str, '0', total_size);
+    // Write value
+    util_write_uint32(str + (total_size - size), value);
+    return total_size;
+}
+
+uint32_t util_write_string(char *str, const char *data)
+{
+    uint32_t pos = 0;
+
+    while (0 != data[pos]) {
+        str[pos] = data[pos];
+        pos++;
+    }
+
+    return pos;
+}
+
+uint32_t util_div_round_up(uint32_t dividen, uint32_t divisor)
+{
+    return (dividen + divisor - 1) / divisor;
+}
+
+uint32_t util_div_round_down(uint32_t dividen, uint32_t divisor)
+{
+    return dividen / divisor;
+}
+
+uint32_t util_div_round(uint32_t dividen, uint32_t divisor)
+{
+    return (dividen + divisor / 2) / divisor;
+}
+
+void _util_assert(bool expression, const char *filename, uint16_t line)
+{
+    bool assert_set;
+    cortex_int_state_t int_state;
+
+    if (expression) {
+        return;
+    }
+
+    int_state = cortex_int_get_and_disable();
+    // Only write the assert if there is not already one
+    assert_set = config_ram_get_assert(0, 0, 0, 0);
+
+    if (!assert_set) {
+        config_ram_set_assert(filename, line);
+    }
+
+    cortex_int_restore(int_state);
+
+    // Start a remount if this is the first assert
+    // Do not call vfs_mngr_fs_remount from an ISR!
+    if (!assert_set && !cortex_in_isr()) {
+        vfs_mngr_fs_remount();
+    }
+}
+
+void util_assert_clear()
+{
+    cortex_int_state_t int_state;
+    int_state = cortex_int_get_and_disable();
+    config_ram_clear_assert();
+    cortex_int_restore(int_state);
+}