This is a FileHandle interface implementation and retarget registration of the stdio interface to the Segger Real-Time Terminal (RTT) instead of the default serial port. Retargeting will automatically take place if this library is added to the project.
Dependents: 3_Test_AFE 1_Test_Flash_ADC_RTT
SeggerRTT/SEGGER_RTT_printf.c@0:7fca1bf48117, 2019-05-18 (annotated)
- Committer:
- 0x6d61726b
- Date:
- Sat May 18 22:41:10 2019 +0000
- Revision:
- 0:7fca1bf48117
updated to Segger RTT version 6.44i
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
0x6d61726b | 0:7fca1bf48117 | 1 | /********************************************************************* |
0x6d61726b | 0:7fca1bf48117 | 2 | * SEGGER Microcontroller GmbH * |
0x6d61726b | 0:7fca1bf48117 | 3 | * The Embedded Experts * |
0x6d61726b | 0:7fca1bf48117 | 4 | ********************************************************************** |
0x6d61726b | 0:7fca1bf48117 | 5 | * * |
0x6d61726b | 0:7fca1bf48117 | 6 | * (c) 1995 - 2019 SEGGER Microcontroller GmbH * |
0x6d61726b | 0:7fca1bf48117 | 7 | * * |
0x6d61726b | 0:7fca1bf48117 | 8 | * www.segger.com Support: support@segger.com * |
0x6d61726b | 0:7fca1bf48117 | 9 | * * |
0x6d61726b | 0:7fca1bf48117 | 10 | ********************************************************************** |
0x6d61726b | 0:7fca1bf48117 | 11 | * * |
0x6d61726b | 0:7fca1bf48117 | 12 | * SEGGER RTT * Real Time Transfer for embedded targets * |
0x6d61726b | 0:7fca1bf48117 | 13 | * * |
0x6d61726b | 0:7fca1bf48117 | 14 | ********************************************************************** |
0x6d61726b | 0:7fca1bf48117 | 15 | * * |
0x6d61726b | 0:7fca1bf48117 | 16 | * All rights reserved. * |
0x6d61726b | 0:7fca1bf48117 | 17 | * * |
0x6d61726b | 0:7fca1bf48117 | 18 | * SEGGER strongly recommends to not make any changes * |
0x6d61726b | 0:7fca1bf48117 | 19 | * to or modify the source code of this software in order to stay * |
0x6d61726b | 0:7fca1bf48117 | 20 | * compatible with the RTT protocol and J-Link. * |
0x6d61726b | 0:7fca1bf48117 | 21 | * * |
0x6d61726b | 0:7fca1bf48117 | 22 | * Redistribution and use in source and binary forms, with or * |
0x6d61726b | 0:7fca1bf48117 | 23 | * without modification, are permitted provided that the following * |
0x6d61726b | 0:7fca1bf48117 | 24 | * conditions are met: * |
0x6d61726b | 0:7fca1bf48117 | 25 | * * |
0x6d61726b | 0:7fca1bf48117 | 26 | * o Redistributions of source code must retain the above copyright * |
0x6d61726b | 0:7fca1bf48117 | 27 | * notice, this list of conditions and the following disclaimer. * |
0x6d61726b | 0:7fca1bf48117 | 28 | * * |
0x6d61726b | 0:7fca1bf48117 | 29 | * o Redistributions in binary form must reproduce the above * |
0x6d61726b | 0:7fca1bf48117 | 30 | * copyright notice, this list of conditions and the following * |
0x6d61726b | 0:7fca1bf48117 | 31 | * disclaimer in the documentation and/or other materials provided * |
0x6d61726b | 0:7fca1bf48117 | 32 | * with the distribution. * |
0x6d61726b | 0:7fca1bf48117 | 33 | * * |
0x6d61726b | 0:7fca1bf48117 | 34 | * o Neither the name of SEGGER Microcontroller GmbH * |
0x6d61726b | 0:7fca1bf48117 | 35 | * nor the names of its contributors may be used to endorse or * |
0x6d61726b | 0:7fca1bf48117 | 36 | * promote products derived from this software without specific * |
0x6d61726b | 0:7fca1bf48117 | 37 | * prior written permission. * |
0x6d61726b | 0:7fca1bf48117 | 38 | * * |
0x6d61726b | 0:7fca1bf48117 | 39 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND * |
0x6d61726b | 0:7fca1bf48117 | 40 | * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, * |
0x6d61726b | 0:7fca1bf48117 | 41 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * |
0x6d61726b | 0:7fca1bf48117 | 42 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * |
0x6d61726b | 0:7fca1bf48117 | 43 | * DISCLAIMED. IN NO EVENT SHALL SEGGER Microcontroller BE LIABLE FOR * |
0x6d61726b | 0:7fca1bf48117 | 44 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * |
0x6d61726b | 0:7fca1bf48117 | 45 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT * |
0x6d61726b | 0:7fca1bf48117 | 46 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * |
0x6d61726b | 0:7fca1bf48117 | 47 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * |
0x6d61726b | 0:7fca1bf48117 | 48 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * |
0x6d61726b | 0:7fca1bf48117 | 49 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE * |
0x6d61726b | 0:7fca1bf48117 | 50 | * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * |
0x6d61726b | 0:7fca1bf48117 | 51 | * DAMAGE. * |
0x6d61726b | 0:7fca1bf48117 | 52 | * * |
0x6d61726b | 0:7fca1bf48117 | 53 | ********************************************************************** |
0x6d61726b | 0:7fca1bf48117 | 54 | * * |
0x6d61726b | 0:7fca1bf48117 | 55 | * RTT version: 6.44i * |
0x6d61726b | 0:7fca1bf48117 | 56 | * * |
0x6d61726b | 0:7fca1bf48117 | 57 | ********************************************************************** |
0x6d61726b | 0:7fca1bf48117 | 58 | ---------------------------END-OF-HEADER------------------------------ |
0x6d61726b | 0:7fca1bf48117 | 59 | File : SEGGER_RTT_printf.c |
0x6d61726b | 0:7fca1bf48117 | 60 | Purpose : Replacement for printf to write formatted data via RTT |
0x6d61726b | 0:7fca1bf48117 | 61 | Revision: Rev: 12360 |
0x6d61726b | 0:7fca1bf48117 | 62 | ---------------------------------------------------------------------- |
0x6d61726b | 0:7fca1bf48117 | 63 | */ |
0x6d61726b | 0:7fca1bf48117 | 64 | #include "SEGGER_RTT.h" |
0x6d61726b | 0:7fca1bf48117 | 65 | #include "SEGGER_RTT_Conf.h" |
0x6d61726b | 0:7fca1bf48117 | 66 | |
0x6d61726b | 0:7fca1bf48117 | 67 | /********************************************************************* |
0x6d61726b | 0:7fca1bf48117 | 68 | * |
0x6d61726b | 0:7fca1bf48117 | 69 | * Defines, configurable |
0x6d61726b | 0:7fca1bf48117 | 70 | * |
0x6d61726b | 0:7fca1bf48117 | 71 | ********************************************************************** |
0x6d61726b | 0:7fca1bf48117 | 72 | */ |
0x6d61726b | 0:7fca1bf48117 | 73 | |
0x6d61726b | 0:7fca1bf48117 | 74 | #ifndef SEGGER_RTT_PRINTF_BUFFER_SIZE |
0x6d61726b | 0:7fca1bf48117 | 75 | #define SEGGER_RTT_PRINTF_BUFFER_SIZE (64) |
0x6d61726b | 0:7fca1bf48117 | 76 | #endif |
0x6d61726b | 0:7fca1bf48117 | 77 | |
0x6d61726b | 0:7fca1bf48117 | 78 | #include <stdlib.h> |
0x6d61726b | 0:7fca1bf48117 | 79 | #include <stdarg.h> |
0x6d61726b | 0:7fca1bf48117 | 80 | |
0x6d61726b | 0:7fca1bf48117 | 81 | |
0x6d61726b | 0:7fca1bf48117 | 82 | #define FORMAT_FLAG_LEFT_JUSTIFY (1u << 0) |
0x6d61726b | 0:7fca1bf48117 | 83 | #define FORMAT_FLAG_PAD_ZERO (1u << 1) |
0x6d61726b | 0:7fca1bf48117 | 84 | #define FORMAT_FLAG_PRINT_SIGN (1u << 2) |
0x6d61726b | 0:7fca1bf48117 | 85 | #define FORMAT_FLAG_ALTERNATE (1u << 3) |
0x6d61726b | 0:7fca1bf48117 | 86 | |
0x6d61726b | 0:7fca1bf48117 | 87 | /********************************************************************* |
0x6d61726b | 0:7fca1bf48117 | 88 | * |
0x6d61726b | 0:7fca1bf48117 | 89 | * Types |
0x6d61726b | 0:7fca1bf48117 | 90 | * |
0x6d61726b | 0:7fca1bf48117 | 91 | ********************************************************************** |
0x6d61726b | 0:7fca1bf48117 | 92 | */ |
0x6d61726b | 0:7fca1bf48117 | 93 | |
0x6d61726b | 0:7fca1bf48117 | 94 | typedef struct { |
0x6d61726b | 0:7fca1bf48117 | 95 | char* pBuffer; |
0x6d61726b | 0:7fca1bf48117 | 96 | unsigned BufferSize; |
0x6d61726b | 0:7fca1bf48117 | 97 | unsigned Cnt; |
0x6d61726b | 0:7fca1bf48117 | 98 | |
0x6d61726b | 0:7fca1bf48117 | 99 | int ReturnValue; |
0x6d61726b | 0:7fca1bf48117 | 100 | |
0x6d61726b | 0:7fca1bf48117 | 101 | unsigned RTTBufferIndex; |
0x6d61726b | 0:7fca1bf48117 | 102 | } SEGGER_RTT_PRINTF_DESC; |
0x6d61726b | 0:7fca1bf48117 | 103 | |
0x6d61726b | 0:7fca1bf48117 | 104 | /********************************************************************* |
0x6d61726b | 0:7fca1bf48117 | 105 | * |
0x6d61726b | 0:7fca1bf48117 | 106 | * Function prototypes |
0x6d61726b | 0:7fca1bf48117 | 107 | * |
0x6d61726b | 0:7fca1bf48117 | 108 | ********************************************************************** |
0x6d61726b | 0:7fca1bf48117 | 109 | */ |
0x6d61726b | 0:7fca1bf48117 | 110 | |
0x6d61726b | 0:7fca1bf48117 | 111 | /********************************************************************* |
0x6d61726b | 0:7fca1bf48117 | 112 | * |
0x6d61726b | 0:7fca1bf48117 | 113 | * Static code |
0x6d61726b | 0:7fca1bf48117 | 114 | * |
0x6d61726b | 0:7fca1bf48117 | 115 | ********************************************************************** |
0x6d61726b | 0:7fca1bf48117 | 116 | */ |
0x6d61726b | 0:7fca1bf48117 | 117 | /********************************************************************* |
0x6d61726b | 0:7fca1bf48117 | 118 | * |
0x6d61726b | 0:7fca1bf48117 | 119 | * _StoreChar |
0x6d61726b | 0:7fca1bf48117 | 120 | */ |
0x6d61726b | 0:7fca1bf48117 | 121 | static void _StoreChar(SEGGER_RTT_PRINTF_DESC * p, char c) { |
0x6d61726b | 0:7fca1bf48117 | 122 | unsigned Cnt; |
0x6d61726b | 0:7fca1bf48117 | 123 | |
0x6d61726b | 0:7fca1bf48117 | 124 | Cnt = p->Cnt; |
0x6d61726b | 0:7fca1bf48117 | 125 | if ((Cnt + 1u) <= p->BufferSize) { |
0x6d61726b | 0:7fca1bf48117 | 126 | *(p->pBuffer + Cnt) = c; |
0x6d61726b | 0:7fca1bf48117 | 127 | p->Cnt = Cnt + 1u; |
0x6d61726b | 0:7fca1bf48117 | 128 | p->ReturnValue++; |
0x6d61726b | 0:7fca1bf48117 | 129 | } |
0x6d61726b | 0:7fca1bf48117 | 130 | // |
0x6d61726b | 0:7fca1bf48117 | 131 | // Write part of string, when the buffer is full |
0x6d61726b | 0:7fca1bf48117 | 132 | // |
0x6d61726b | 0:7fca1bf48117 | 133 | if (p->Cnt == p->BufferSize) { |
0x6d61726b | 0:7fca1bf48117 | 134 | if (SEGGER_RTT_Write(p->RTTBufferIndex, p->pBuffer, p->Cnt) != p->Cnt) { |
0x6d61726b | 0:7fca1bf48117 | 135 | p->ReturnValue = -1; |
0x6d61726b | 0:7fca1bf48117 | 136 | } else { |
0x6d61726b | 0:7fca1bf48117 | 137 | p->Cnt = 0u; |
0x6d61726b | 0:7fca1bf48117 | 138 | } |
0x6d61726b | 0:7fca1bf48117 | 139 | } |
0x6d61726b | 0:7fca1bf48117 | 140 | } |
0x6d61726b | 0:7fca1bf48117 | 141 | |
0x6d61726b | 0:7fca1bf48117 | 142 | /********************************************************************* |
0x6d61726b | 0:7fca1bf48117 | 143 | * |
0x6d61726b | 0:7fca1bf48117 | 144 | * _PrintUnsigned |
0x6d61726b | 0:7fca1bf48117 | 145 | */ |
0x6d61726b | 0:7fca1bf48117 | 146 | static void _PrintUnsigned(SEGGER_RTT_PRINTF_DESC * pBufferDesc, unsigned v, unsigned Base, unsigned NumDigits, unsigned FieldWidth, unsigned FormatFlags) { |
0x6d61726b | 0:7fca1bf48117 | 147 | static const char _aV2C[16] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; |
0x6d61726b | 0:7fca1bf48117 | 148 | unsigned Div; |
0x6d61726b | 0:7fca1bf48117 | 149 | unsigned Digit; |
0x6d61726b | 0:7fca1bf48117 | 150 | unsigned Number; |
0x6d61726b | 0:7fca1bf48117 | 151 | unsigned Width; |
0x6d61726b | 0:7fca1bf48117 | 152 | char c; |
0x6d61726b | 0:7fca1bf48117 | 153 | |
0x6d61726b | 0:7fca1bf48117 | 154 | Number = v; |
0x6d61726b | 0:7fca1bf48117 | 155 | Digit = 1u; |
0x6d61726b | 0:7fca1bf48117 | 156 | // |
0x6d61726b | 0:7fca1bf48117 | 157 | // Get actual field width |
0x6d61726b | 0:7fca1bf48117 | 158 | // |
0x6d61726b | 0:7fca1bf48117 | 159 | Width = 1u; |
0x6d61726b | 0:7fca1bf48117 | 160 | while (Number >= Base) { |
0x6d61726b | 0:7fca1bf48117 | 161 | Number = (Number / Base); |
0x6d61726b | 0:7fca1bf48117 | 162 | Width++; |
0x6d61726b | 0:7fca1bf48117 | 163 | } |
0x6d61726b | 0:7fca1bf48117 | 164 | if (NumDigits > Width) { |
0x6d61726b | 0:7fca1bf48117 | 165 | Width = NumDigits; |
0x6d61726b | 0:7fca1bf48117 | 166 | } |
0x6d61726b | 0:7fca1bf48117 | 167 | // |
0x6d61726b | 0:7fca1bf48117 | 168 | // Print leading chars if necessary |
0x6d61726b | 0:7fca1bf48117 | 169 | // |
0x6d61726b | 0:7fca1bf48117 | 170 | if ((FormatFlags & FORMAT_FLAG_LEFT_JUSTIFY) == 0u) { |
0x6d61726b | 0:7fca1bf48117 | 171 | if (FieldWidth != 0u) { |
0x6d61726b | 0:7fca1bf48117 | 172 | if (((FormatFlags & FORMAT_FLAG_PAD_ZERO) == FORMAT_FLAG_PAD_ZERO) && (NumDigits == 0u)) { |
0x6d61726b | 0:7fca1bf48117 | 173 | c = '0'; |
0x6d61726b | 0:7fca1bf48117 | 174 | } else { |
0x6d61726b | 0:7fca1bf48117 | 175 | c = ' '; |
0x6d61726b | 0:7fca1bf48117 | 176 | } |
0x6d61726b | 0:7fca1bf48117 | 177 | while ((FieldWidth != 0u) && (Width < FieldWidth)) { |
0x6d61726b | 0:7fca1bf48117 | 178 | FieldWidth--; |
0x6d61726b | 0:7fca1bf48117 | 179 | _StoreChar(pBufferDesc, c); |
0x6d61726b | 0:7fca1bf48117 | 180 | if (pBufferDesc->ReturnValue < 0) { |
0x6d61726b | 0:7fca1bf48117 | 181 | break; |
0x6d61726b | 0:7fca1bf48117 | 182 | } |
0x6d61726b | 0:7fca1bf48117 | 183 | } |
0x6d61726b | 0:7fca1bf48117 | 184 | } |
0x6d61726b | 0:7fca1bf48117 | 185 | } |
0x6d61726b | 0:7fca1bf48117 | 186 | if (pBufferDesc->ReturnValue >= 0) { |
0x6d61726b | 0:7fca1bf48117 | 187 | // |
0x6d61726b | 0:7fca1bf48117 | 188 | // Compute Digit. |
0x6d61726b | 0:7fca1bf48117 | 189 | // Loop until Digit has the value of the highest digit required. |
0x6d61726b | 0:7fca1bf48117 | 190 | // Example: If the output is 345 (Base 10), loop 2 times until Digit is 100. |
0x6d61726b | 0:7fca1bf48117 | 191 | // |
0x6d61726b | 0:7fca1bf48117 | 192 | while (1) { |
0x6d61726b | 0:7fca1bf48117 | 193 | if (NumDigits > 1u) { // User specified a min number of digits to print? => Make sure we loop at least that often, before checking anything else (> 1 check avoids problems with NumDigits being signed / unsigned) |
0x6d61726b | 0:7fca1bf48117 | 194 | NumDigits--; |
0x6d61726b | 0:7fca1bf48117 | 195 | } else { |
0x6d61726b | 0:7fca1bf48117 | 196 | Div = v / Digit; |
0x6d61726b | 0:7fca1bf48117 | 197 | if (Div < Base) { // Is our divider big enough to extract the highest digit from value? => Done |
0x6d61726b | 0:7fca1bf48117 | 198 | break; |
0x6d61726b | 0:7fca1bf48117 | 199 | } |
0x6d61726b | 0:7fca1bf48117 | 200 | } |
0x6d61726b | 0:7fca1bf48117 | 201 | Digit *= Base; |
0x6d61726b | 0:7fca1bf48117 | 202 | } |
0x6d61726b | 0:7fca1bf48117 | 203 | // |
0x6d61726b | 0:7fca1bf48117 | 204 | // Output digits |
0x6d61726b | 0:7fca1bf48117 | 205 | // |
0x6d61726b | 0:7fca1bf48117 | 206 | do { |
0x6d61726b | 0:7fca1bf48117 | 207 | Div = v / Digit; |
0x6d61726b | 0:7fca1bf48117 | 208 | v -= Div * Digit; |
0x6d61726b | 0:7fca1bf48117 | 209 | _StoreChar(pBufferDesc, _aV2C[Div]); |
0x6d61726b | 0:7fca1bf48117 | 210 | if (pBufferDesc->ReturnValue < 0) { |
0x6d61726b | 0:7fca1bf48117 | 211 | break; |
0x6d61726b | 0:7fca1bf48117 | 212 | } |
0x6d61726b | 0:7fca1bf48117 | 213 | Digit /= Base; |
0x6d61726b | 0:7fca1bf48117 | 214 | } while (Digit); |
0x6d61726b | 0:7fca1bf48117 | 215 | // |
0x6d61726b | 0:7fca1bf48117 | 216 | // Print trailing spaces if necessary |
0x6d61726b | 0:7fca1bf48117 | 217 | // |
0x6d61726b | 0:7fca1bf48117 | 218 | if ((FormatFlags & FORMAT_FLAG_LEFT_JUSTIFY) == FORMAT_FLAG_LEFT_JUSTIFY) { |
0x6d61726b | 0:7fca1bf48117 | 219 | if (FieldWidth != 0u) { |
0x6d61726b | 0:7fca1bf48117 | 220 | while ((FieldWidth != 0u) && (Width < FieldWidth)) { |
0x6d61726b | 0:7fca1bf48117 | 221 | FieldWidth--; |
0x6d61726b | 0:7fca1bf48117 | 222 | _StoreChar(pBufferDesc, ' '); |
0x6d61726b | 0:7fca1bf48117 | 223 | if (pBufferDesc->ReturnValue < 0) { |
0x6d61726b | 0:7fca1bf48117 | 224 | break; |
0x6d61726b | 0:7fca1bf48117 | 225 | } |
0x6d61726b | 0:7fca1bf48117 | 226 | } |
0x6d61726b | 0:7fca1bf48117 | 227 | } |
0x6d61726b | 0:7fca1bf48117 | 228 | } |
0x6d61726b | 0:7fca1bf48117 | 229 | } |
0x6d61726b | 0:7fca1bf48117 | 230 | } |
0x6d61726b | 0:7fca1bf48117 | 231 | |
0x6d61726b | 0:7fca1bf48117 | 232 | /********************************************************************* |
0x6d61726b | 0:7fca1bf48117 | 233 | * |
0x6d61726b | 0:7fca1bf48117 | 234 | * _PrintInt |
0x6d61726b | 0:7fca1bf48117 | 235 | */ |
0x6d61726b | 0:7fca1bf48117 | 236 | static void _PrintInt(SEGGER_RTT_PRINTF_DESC * pBufferDesc, int v, unsigned Base, unsigned NumDigits, unsigned FieldWidth, unsigned FormatFlags) { |
0x6d61726b | 0:7fca1bf48117 | 237 | unsigned Width; |
0x6d61726b | 0:7fca1bf48117 | 238 | int Number; |
0x6d61726b | 0:7fca1bf48117 | 239 | |
0x6d61726b | 0:7fca1bf48117 | 240 | Number = (v < 0) ? -v : v; |
0x6d61726b | 0:7fca1bf48117 | 241 | |
0x6d61726b | 0:7fca1bf48117 | 242 | // |
0x6d61726b | 0:7fca1bf48117 | 243 | // Get actual field width |
0x6d61726b | 0:7fca1bf48117 | 244 | // |
0x6d61726b | 0:7fca1bf48117 | 245 | Width = 1u; |
0x6d61726b | 0:7fca1bf48117 | 246 | while (Number >= (int)Base) { |
0x6d61726b | 0:7fca1bf48117 | 247 | Number = (Number / (int)Base); |
0x6d61726b | 0:7fca1bf48117 | 248 | Width++; |
0x6d61726b | 0:7fca1bf48117 | 249 | } |
0x6d61726b | 0:7fca1bf48117 | 250 | if (NumDigits > Width) { |
0x6d61726b | 0:7fca1bf48117 | 251 | Width = NumDigits; |
0x6d61726b | 0:7fca1bf48117 | 252 | } |
0x6d61726b | 0:7fca1bf48117 | 253 | if ((FieldWidth > 0u) && ((v < 0) || ((FormatFlags & FORMAT_FLAG_PRINT_SIGN) == FORMAT_FLAG_PRINT_SIGN))) { |
0x6d61726b | 0:7fca1bf48117 | 254 | FieldWidth--; |
0x6d61726b | 0:7fca1bf48117 | 255 | } |
0x6d61726b | 0:7fca1bf48117 | 256 | |
0x6d61726b | 0:7fca1bf48117 | 257 | // |
0x6d61726b | 0:7fca1bf48117 | 258 | // Print leading spaces if necessary |
0x6d61726b | 0:7fca1bf48117 | 259 | // |
0x6d61726b | 0:7fca1bf48117 | 260 | if ((((FormatFlags & FORMAT_FLAG_PAD_ZERO) == 0u) || (NumDigits != 0u)) && ((FormatFlags & FORMAT_FLAG_LEFT_JUSTIFY) == 0u)) { |
0x6d61726b | 0:7fca1bf48117 | 261 | if (FieldWidth != 0u) { |
0x6d61726b | 0:7fca1bf48117 | 262 | while ((FieldWidth != 0u) && (Width < FieldWidth)) { |
0x6d61726b | 0:7fca1bf48117 | 263 | FieldWidth--; |
0x6d61726b | 0:7fca1bf48117 | 264 | _StoreChar(pBufferDesc, ' '); |
0x6d61726b | 0:7fca1bf48117 | 265 | if (pBufferDesc->ReturnValue < 0) { |
0x6d61726b | 0:7fca1bf48117 | 266 | break; |
0x6d61726b | 0:7fca1bf48117 | 267 | } |
0x6d61726b | 0:7fca1bf48117 | 268 | } |
0x6d61726b | 0:7fca1bf48117 | 269 | } |
0x6d61726b | 0:7fca1bf48117 | 270 | } |
0x6d61726b | 0:7fca1bf48117 | 271 | // |
0x6d61726b | 0:7fca1bf48117 | 272 | // Print sign if necessary |
0x6d61726b | 0:7fca1bf48117 | 273 | // |
0x6d61726b | 0:7fca1bf48117 | 274 | if (pBufferDesc->ReturnValue >= 0) { |
0x6d61726b | 0:7fca1bf48117 | 275 | if (v < 0) { |
0x6d61726b | 0:7fca1bf48117 | 276 | v = -v; |
0x6d61726b | 0:7fca1bf48117 | 277 | _StoreChar(pBufferDesc, '-'); |
0x6d61726b | 0:7fca1bf48117 | 278 | } else if ((FormatFlags & FORMAT_FLAG_PRINT_SIGN) == FORMAT_FLAG_PRINT_SIGN) { |
0x6d61726b | 0:7fca1bf48117 | 279 | _StoreChar(pBufferDesc, '+'); |
0x6d61726b | 0:7fca1bf48117 | 280 | } else { |
0x6d61726b | 0:7fca1bf48117 | 281 | |
0x6d61726b | 0:7fca1bf48117 | 282 | } |
0x6d61726b | 0:7fca1bf48117 | 283 | if (pBufferDesc->ReturnValue >= 0) { |
0x6d61726b | 0:7fca1bf48117 | 284 | // |
0x6d61726b | 0:7fca1bf48117 | 285 | // Print leading zeros if necessary |
0x6d61726b | 0:7fca1bf48117 | 286 | // |
0x6d61726b | 0:7fca1bf48117 | 287 | if (((FormatFlags & FORMAT_FLAG_PAD_ZERO) == FORMAT_FLAG_PAD_ZERO) && ((FormatFlags & FORMAT_FLAG_LEFT_JUSTIFY) == 0u) && (NumDigits == 0u)) { |
0x6d61726b | 0:7fca1bf48117 | 288 | if (FieldWidth != 0u) { |
0x6d61726b | 0:7fca1bf48117 | 289 | while ((FieldWidth != 0u) && (Width < FieldWidth)) { |
0x6d61726b | 0:7fca1bf48117 | 290 | FieldWidth--; |
0x6d61726b | 0:7fca1bf48117 | 291 | _StoreChar(pBufferDesc, '0'); |
0x6d61726b | 0:7fca1bf48117 | 292 | if (pBufferDesc->ReturnValue < 0) { |
0x6d61726b | 0:7fca1bf48117 | 293 | break; |
0x6d61726b | 0:7fca1bf48117 | 294 | } |
0x6d61726b | 0:7fca1bf48117 | 295 | } |
0x6d61726b | 0:7fca1bf48117 | 296 | } |
0x6d61726b | 0:7fca1bf48117 | 297 | } |
0x6d61726b | 0:7fca1bf48117 | 298 | if (pBufferDesc->ReturnValue >= 0) { |
0x6d61726b | 0:7fca1bf48117 | 299 | // |
0x6d61726b | 0:7fca1bf48117 | 300 | // Print number without sign |
0x6d61726b | 0:7fca1bf48117 | 301 | // |
0x6d61726b | 0:7fca1bf48117 | 302 | _PrintUnsigned(pBufferDesc, (unsigned)v, Base, NumDigits, FieldWidth, FormatFlags); |
0x6d61726b | 0:7fca1bf48117 | 303 | } |
0x6d61726b | 0:7fca1bf48117 | 304 | } |
0x6d61726b | 0:7fca1bf48117 | 305 | } |
0x6d61726b | 0:7fca1bf48117 | 306 | } |
0x6d61726b | 0:7fca1bf48117 | 307 | |
0x6d61726b | 0:7fca1bf48117 | 308 | /********************************************************************* |
0x6d61726b | 0:7fca1bf48117 | 309 | * |
0x6d61726b | 0:7fca1bf48117 | 310 | * Public code |
0x6d61726b | 0:7fca1bf48117 | 311 | * |
0x6d61726b | 0:7fca1bf48117 | 312 | ********************************************************************** |
0x6d61726b | 0:7fca1bf48117 | 313 | */ |
0x6d61726b | 0:7fca1bf48117 | 314 | /********************************************************************* |
0x6d61726b | 0:7fca1bf48117 | 315 | * |
0x6d61726b | 0:7fca1bf48117 | 316 | * SEGGER_RTT_vprintf |
0x6d61726b | 0:7fca1bf48117 | 317 | * |
0x6d61726b | 0:7fca1bf48117 | 318 | * Function description |
0x6d61726b | 0:7fca1bf48117 | 319 | * Stores a formatted string in SEGGER RTT control block. |
0x6d61726b | 0:7fca1bf48117 | 320 | * This data is read by the host. |
0x6d61726b | 0:7fca1bf48117 | 321 | * |
0x6d61726b | 0:7fca1bf48117 | 322 | * Parameters |
0x6d61726b | 0:7fca1bf48117 | 323 | * BufferIndex Index of "Up"-buffer to be used. (e.g. 0 for "Terminal") |
0x6d61726b | 0:7fca1bf48117 | 324 | * sFormat Pointer to format string |
0x6d61726b | 0:7fca1bf48117 | 325 | * pParamList Pointer to the list of arguments for the format string |
0x6d61726b | 0:7fca1bf48117 | 326 | * |
0x6d61726b | 0:7fca1bf48117 | 327 | * Return values |
0x6d61726b | 0:7fca1bf48117 | 328 | * >= 0: Number of bytes which have been stored in the "Up"-buffer. |
0x6d61726b | 0:7fca1bf48117 | 329 | * < 0: Error |
0x6d61726b | 0:7fca1bf48117 | 330 | */ |
0x6d61726b | 0:7fca1bf48117 | 331 | int SEGGER_RTT_vprintf(unsigned BufferIndex, const char * sFormat, va_list * pParamList) { |
0x6d61726b | 0:7fca1bf48117 | 332 | char c; |
0x6d61726b | 0:7fca1bf48117 | 333 | SEGGER_RTT_PRINTF_DESC BufferDesc; |
0x6d61726b | 0:7fca1bf48117 | 334 | int v; |
0x6d61726b | 0:7fca1bf48117 | 335 | unsigned NumDigits; |
0x6d61726b | 0:7fca1bf48117 | 336 | unsigned FormatFlags; |
0x6d61726b | 0:7fca1bf48117 | 337 | unsigned FieldWidth; |
0x6d61726b | 0:7fca1bf48117 | 338 | char acBuffer[SEGGER_RTT_PRINTF_BUFFER_SIZE]; |
0x6d61726b | 0:7fca1bf48117 | 339 | |
0x6d61726b | 0:7fca1bf48117 | 340 | BufferDesc.pBuffer = acBuffer; |
0x6d61726b | 0:7fca1bf48117 | 341 | BufferDesc.BufferSize = SEGGER_RTT_PRINTF_BUFFER_SIZE; |
0x6d61726b | 0:7fca1bf48117 | 342 | BufferDesc.Cnt = 0u; |
0x6d61726b | 0:7fca1bf48117 | 343 | BufferDesc.RTTBufferIndex = BufferIndex; |
0x6d61726b | 0:7fca1bf48117 | 344 | BufferDesc.ReturnValue = 0; |
0x6d61726b | 0:7fca1bf48117 | 345 | |
0x6d61726b | 0:7fca1bf48117 | 346 | do { |
0x6d61726b | 0:7fca1bf48117 | 347 | c = *sFormat; |
0x6d61726b | 0:7fca1bf48117 | 348 | sFormat++; |
0x6d61726b | 0:7fca1bf48117 | 349 | if (c == 0u) { |
0x6d61726b | 0:7fca1bf48117 | 350 | break; |
0x6d61726b | 0:7fca1bf48117 | 351 | } |
0x6d61726b | 0:7fca1bf48117 | 352 | if (c == '%') { |
0x6d61726b | 0:7fca1bf48117 | 353 | // |
0x6d61726b | 0:7fca1bf48117 | 354 | // Filter out flags |
0x6d61726b | 0:7fca1bf48117 | 355 | // |
0x6d61726b | 0:7fca1bf48117 | 356 | FormatFlags = 0u; |
0x6d61726b | 0:7fca1bf48117 | 357 | v = 1; |
0x6d61726b | 0:7fca1bf48117 | 358 | do { |
0x6d61726b | 0:7fca1bf48117 | 359 | c = *sFormat; |
0x6d61726b | 0:7fca1bf48117 | 360 | switch (c) { |
0x6d61726b | 0:7fca1bf48117 | 361 | case '-': FormatFlags |= FORMAT_FLAG_LEFT_JUSTIFY; sFormat++; break; |
0x6d61726b | 0:7fca1bf48117 | 362 | case '0': FormatFlags |= FORMAT_FLAG_PAD_ZERO; sFormat++; break; |
0x6d61726b | 0:7fca1bf48117 | 363 | case '+': FormatFlags |= FORMAT_FLAG_PRINT_SIGN; sFormat++; break; |
0x6d61726b | 0:7fca1bf48117 | 364 | case '#': FormatFlags |= FORMAT_FLAG_ALTERNATE; sFormat++; break; |
0x6d61726b | 0:7fca1bf48117 | 365 | default: v = 0; break; |
0x6d61726b | 0:7fca1bf48117 | 366 | } |
0x6d61726b | 0:7fca1bf48117 | 367 | } while (v); |
0x6d61726b | 0:7fca1bf48117 | 368 | // |
0x6d61726b | 0:7fca1bf48117 | 369 | // filter out field with |
0x6d61726b | 0:7fca1bf48117 | 370 | // |
0x6d61726b | 0:7fca1bf48117 | 371 | FieldWidth = 0u; |
0x6d61726b | 0:7fca1bf48117 | 372 | do { |
0x6d61726b | 0:7fca1bf48117 | 373 | c = *sFormat; |
0x6d61726b | 0:7fca1bf48117 | 374 | if ((c < '0') || (c > '9')) { |
0x6d61726b | 0:7fca1bf48117 | 375 | break; |
0x6d61726b | 0:7fca1bf48117 | 376 | } |
0x6d61726b | 0:7fca1bf48117 | 377 | sFormat++; |
0x6d61726b | 0:7fca1bf48117 | 378 | FieldWidth = (FieldWidth * 10u) + ((unsigned)c - '0'); |
0x6d61726b | 0:7fca1bf48117 | 379 | } while (1); |
0x6d61726b | 0:7fca1bf48117 | 380 | |
0x6d61726b | 0:7fca1bf48117 | 381 | // |
0x6d61726b | 0:7fca1bf48117 | 382 | // Filter out precision (number of digits to display) |
0x6d61726b | 0:7fca1bf48117 | 383 | // |
0x6d61726b | 0:7fca1bf48117 | 384 | NumDigits = 0u; |
0x6d61726b | 0:7fca1bf48117 | 385 | c = *sFormat; |
0x6d61726b | 0:7fca1bf48117 | 386 | if (c == '.') { |
0x6d61726b | 0:7fca1bf48117 | 387 | sFormat++; |
0x6d61726b | 0:7fca1bf48117 | 388 | do { |
0x6d61726b | 0:7fca1bf48117 | 389 | c = *sFormat; |
0x6d61726b | 0:7fca1bf48117 | 390 | if ((c < '0') || (c > '9')) { |
0x6d61726b | 0:7fca1bf48117 | 391 | break; |
0x6d61726b | 0:7fca1bf48117 | 392 | } |
0x6d61726b | 0:7fca1bf48117 | 393 | sFormat++; |
0x6d61726b | 0:7fca1bf48117 | 394 | NumDigits = NumDigits * 10u + ((unsigned)c - '0'); |
0x6d61726b | 0:7fca1bf48117 | 395 | } while (1); |
0x6d61726b | 0:7fca1bf48117 | 396 | } |
0x6d61726b | 0:7fca1bf48117 | 397 | // |
0x6d61726b | 0:7fca1bf48117 | 398 | // Filter out length modifier |
0x6d61726b | 0:7fca1bf48117 | 399 | // |
0x6d61726b | 0:7fca1bf48117 | 400 | c = *sFormat; |
0x6d61726b | 0:7fca1bf48117 | 401 | do { |
0x6d61726b | 0:7fca1bf48117 | 402 | if ((c == 'l') || (c == 'h')) { |
0x6d61726b | 0:7fca1bf48117 | 403 | sFormat++; |
0x6d61726b | 0:7fca1bf48117 | 404 | c = *sFormat; |
0x6d61726b | 0:7fca1bf48117 | 405 | } else { |
0x6d61726b | 0:7fca1bf48117 | 406 | break; |
0x6d61726b | 0:7fca1bf48117 | 407 | } |
0x6d61726b | 0:7fca1bf48117 | 408 | } while (1); |
0x6d61726b | 0:7fca1bf48117 | 409 | // |
0x6d61726b | 0:7fca1bf48117 | 410 | // Handle specifiers |
0x6d61726b | 0:7fca1bf48117 | 411 | // |
0x6d61726b | 0:7fca1bf48117 | 412 | switch (c) { |
0x6d61726b | 0:7fca1bf48117 | 413 | case 'c': { |
0x6d61726b | 0:7fca1bf48117 | 414 | char c0; |
0x6d61726b | 0:7fca1bf48117 | 415 | v = va_arg(*pParamList, int); |
0x6d61726b | 0:7fca1bf48117 | 416 | c0 = (char)v; |
0x6d61726b | 0:7fca1bf48117 | 417 | _StoreChar(&BufferDesc, c0); |
0x6d61726b | 0:7fca1bf48117 | 418 | break; |
0x6d61726b | 0:7fca1bf48117 | 419 | } |
0x6d61726b | 0:7fca1bf48117 | 420 | case 'd': |
0x6d61726b | 0:7fca1bf48117 | 421 | v = va_arg(*pParamList, int); |
0x6d61726b | 0:7fca1bf48117 | 422 | _PrintInt(&BufferDesc, v, 10u, NumDigits, FieldWidth, FormatFlags); |
0x6d61726b | 0:7fca1bf48117 | 423 | break; |
0x6d61726b | 0:7fca1bf48117 | 424 | case 'u': |
0x6d61726b | 0:7fca1bf48117 | 425 | v = va_arg(*pParamList, int); |
0x6d61726b | 0:7fca1bf48117 | 426 | _PrintUnsigned(&BufferDesc, (unsigned)v, 10u, NumDigits, FieldWidth, FormatFlags); |
0x6d61726b | 0:7fca1bf48117 | 427 | break; |
0x6d61726b | 0:7fca1bf48117 | 428 | case 'x': |
0x6d61726b | 0:7fca1bf48117 | 429 | case 'X': |
0x6d61726b | 0:7fca1bf48117 | 430 | v = va_arg(*pParamList, int); |
0x6d61726b | 0:7fca1bf48117 | 431 | _PrintUnsigned(&BufferDesc, (unsigned)v, 16u, NumDigits, FieldWidth, FormatFlags); |
0x6d61726b | 0:7fca1bf48117 | 432 | break; |
0x6d61726b | 0:7fca1bf48117 | 433 | case 's': |
0x6d61726b | 0:7fca1bf48117 | 434 | { |
0x6d61726b | 0:7fca1bf48117 | 435 | const char * s = va_arg(*pParamList, const char *); |
0x6d61726b | 0:7fca1bf48117 | 436 | do { |
0x6d61726b | 0:7fca1bf48117 | 437 | c = *s; |
0x6d61726b | 0:7fca1bf48117 | 438 | s++; |
0x6d61726b | 0:7fca1bf48117 | 439 | if (c == '\0') { |
0x6d61726b | 0:7fca1bf48117 | 440 | break; |
0x6d61726b | 0:7fca1bf48117 | 441 | } |
0x6d61726b | 0:7fca1bf48117 | 442 | _StoreChar(&BufferDesc, c); |
0x6d61726b | 0:7fca1bf48117 | 443 | } while (BufferDesc.ReturnValue >= 0); |
0x6d61726b | 0:7fca1bf48117 | 444 | } |
0x6d61726b | 0:7fca1bf48117 | 445 | break; |
0x6d61726b | 0:7fca1bf48117 | 446 | case 'p': |
0x6d61726b | 0:7fca1bf48117 | 447 | v = va_arg(*pParamList, int); |
0x6d61726b | 0:7fca1bf48117 | 448 | _PrintUnsigned(&BufferDesc, (unsigned)v, 16u, 8u, 8u, 0u); |
0x6d61726b | 0:7fca1bf48117 | 449 | break; |
0x6d61726b | 0:7fca1bf48117 | 450 | case '%': |
0x6d61726b | 0:7fca1bf48117 | 451 | _StoreChar(&BufferDesc, '%'); |
0x6d61726b | 0:7fca1bf48117 | 452 | break; |
0x6d61726b | 0:7fca1bf48117 | 453 | default: |
0x6d61726b | 0:7fca1bf48117 | 454 | break; |
0x6d61726b | 0:7fca1bf48117 | 455 | } |
0x6d61726b | 0:7fca1bf48117 | 456 | sFormat++; |
0x6d61726b | 0:7fca1bf48117 | 457 | } else { |
0x6d61726b | 0:7fca1bf48117 | 458 | _StoreChar(&BufferDesc, c); |
0x6d61726b | 0:7fca1bf48117 | 459 | } |
0x6d61726b | 0:7fca1bf48117 | 460 | } while (BufferDesc.ReturnValue >= 0); |
0x6d61726b | 0:7fca1bf48117 | 461 | |
0x6d61726b | 0:7fca1bf48117 | 462 | if (BufferDesc.ReturnValue > 0) { |
0x6d61726b | 0:7fca1bf48117 | 463 | // |
0x6d61726b | 0:7fca1bf48117 | 464 | // Write remaining data, if any |
0x6d61726b | 0:7fca1bf48117 | 465 | // |
0x6d61726b | 0:7fca1bf48117 | 466 | if (BufferDesc.Cnt != 0u) { |
0x6d61726b | 0:7fca1bf48117 | 467 | SEGGER_RTT_Write(BufferIndex, acBuffer, BufferDesc.Cnt); |
0x6d61726b | 0:7fca1bf48117 | 468 | } |
0x6d61726b | 0:7fca1bf48117 | 469 | BufferDesc.ReturnValue += (int)BufferDesc.Cnt; |
0x6d61726b | 0:7fca1bf48117 | 470 | } |
0x6d61726b | 0:7fca1bf48117 | 471 | return BufferDesc.ReturnValue; |
0x6d61726b | 0:7fca1bf48117 | 472 | } |
0x6d61726b | 0:7fca1bf48117 | 473 | |
0x6d61726b | 0:7fca1bf48117 | 474 | /********************************************************************* |
0x6d61726b | 0:7fca1bf48117 | 475 | * |
0x6d61726b | 0:7fca1bf48117 | 476 | * SEGGER_RTT_printf |
0x6d61726b | 0:7fca1bf48117 | 477 | * |
0x6d61726b | 0:7fca1bf48117 | 478 | * Function description |
0x6d61726b | 0:7fca1bf48117 | 479 | * Stores a formatted string in SEGGER RTT control block. |
0x6d61726b | 0:7fca1bf48117 | 480 | * This data is read by the host. |
0x6d61726b | 0:7fca1bf48117 | 481 | * |
0x6d61726b | 0:7fca1bf48117 | 482 | * Parameters |
0x6d61726b | 0:7fca1bf48117 | 483 | * BufferIndex Index of "Up"-buffer to be used. (e.g. 0 for "Terminal") |
0x6d61726b | 0:7fca1bf48117 | 484 | * sFormat Pointer to format string, followed by the arguments for conversion |
0x6d61726b | 0:7fca1bf48117 | 485 | * |
0x6d61726b | 0:7fca1bf48117 | 486 | * Return values |
0x6d61726b | 0:7fca1bf48117 | 487 | * >= 0: Number of bytes which have been stored in the "Up"-buffer. |
0x6d61726b | 0:7fca1bf48117 | 488 | * < 0: Error |
0x6d61726b | 0:7fca1bf48117 | 489 | * |
0x6d61726b | 0:7fca1bf48117 | 490 | * Notes |
0x6d61726b | 0:7fca1bf48117 | 491 | * (1) Conversion specifications have following syntax: |
0x6d61726b | 0:7fca1bf48117 | 492 | * %[flags][FieldWidth][.Precision]ConversionSpecifier |
0x6d61726b | 0:7fca1bf48117 | 493 | * (2) Supported flags: |
0x6d61726b | 0:7fca1bf48117 | 494 | * -: Left justify within the field width |
0x6d61726b | 0:7fca1bf48117 | 495 | * +: Always print sign extension for signed conversions |
0x6d61726b | 0:7fca1bf48117 | 496 | * 0: Pad with 0 instead of spaces. Ignored when using '-'-flag or precision |
0x6d61726b | 0:7fca1bf48117 | 497 | * Supported conversion specifiers: |
0x6d61726b | 0:7fca1bf48117 | 498 | * c: Print the argument as one char |
0x6d61726b | 0:7fca1bf48117 | 499 | * d: Print the argument as a signed integer |
0x6d61726b | 0:7fca1bf48117 | 500 | * u: Print the argument as an unsigned integer |
0x6d61726b | 0:7fca1bf48117 | 501 | * x: Print the argument as an hexadecimal integer |
0x6d61726b | 0:7fca1bf48117 | 502 | * s: Print the string pointed to by the argument |
0x6d61726b | 0:7fca1bf48117 | 503 | * p: Print the argument as an 8-digit hexadecimal integer. (Argument shall be a pointer to void.) |
0x6d61726b | 0:7fca1bf48117 | 504 | */ |
0x6d61726b | 0:7fca1bf48117 | 505 | int SEGGER_RTT_printf(unsigned BufferIndex, const char * sFormat, ...) { |
0x6d61726b | 0:7fca1bf48117 | 506 | int r; |
0x6d61726b | 0:7fca1bf48117 | 507 | va_list ParamList; |
0x6d61726b | 0:7fca1bf48117 | 508 | |
0x6d61726b | 0:7fca1bf48117 | 509 | va_start(ParamList, sFormat); |
0x6d61726b | 0:7fca1bf48117 | 510 | r = SEGGER_RTT_vprintf(BufferIndex, sFormat, &ParamList); |
0x6d61726b | 0:7fca1bf48117 | 511 | va_end(ParamList); |
0x6d61726b | 0:7fca1bf48117 | 512 | return r; |
0x6d61726b | 0:7fca1bf48117 | 513 | } |
0x6d61726b | 0:7fca1bf48117 | 514 | /*************************** End of file ****************************/ |