Jens Altenburg / Mbed 2 deprecated Fachbuch_Initialisierungen

Initialisation Nucleo-F446 by Jens Altenburg

Dependencies:   mbed

i2c.cpp@0:9b6fbe273511, 2021-03-17 (annotated)

Committer:
prof_al
Date:
Wed Mar 17 13:55:03 2021 +0000
Revision:
0:9b6fbe273511
Hardware Abstraction Layer (HAL) Nucleo-F446

Who changed what in which revision?

UserRevisionLine numberNew contents of line
prof_al 0:9b6fbe273511 1 #if 0
prof_al 0:9b6fbe273511 2
prof_al 0:9b6fbe273511 3 /***************************************************************************
prof_al 0:9b6fbe273511 4 * Titel : I2C.C
prof_al 0:9b6fbe273511 5 *
prof_al 0:9b6fbe273511 6 * Beschreibung : IIC - Interface
prof_al 0:9b6fbe273511 7 *
prof_al 0:9b6fbe273511 8 * Kategorie :
prof_al 0:9b6fbe273511 9 *
prof_al 0:9b6fbe273511 10 * Verantwortlich : Jens Altenburg
prof_al 0:9b6fbe273511 11 *
prof_al 0:9b6fbe273511 12 * Modulhistory :
prof_al 0:9b6fbe273511 13 *
prof_al 0:9b6fbe273511 14 ----------------------------------------------------------------------------
prof_al 0:9b6fbe273511 15 Date | Author | Change
prof_al 0:9b6fbe273511 16 ----------------------------------------------------------------------------
prof_al 0:9b6fbe273511 17 28.09.03 | J. Altenburg | Ersterstellung
prof_al 0:9b6fbe273511 18 ----------------------------------------------------------------------------
prof_al 0:9b6fbe273511 19
prof_al 0:9b6fbe273511 20 ****************************************************************************/
prof_al 0:9b6fbe273511 21
prof_al 0:9b6fbe273511 22 /***************************************************************************
prof_al 0:9b6fbe273511 23 * HEADER-FILES (Only those that are needed in this file)
prof_al 0:9b6fbe273511 24 ****************************************************************************/
prof_al 0:9b6fbe273511 25 /* Own headerfiles */
prof_al 0:9b6fbe273511 26 #include "i2c.h" /* */
prof_al 0:9b6fbe273511 27
prof_al 0:9b6fbe273511 28
prof_al 0:9b6fbe273511 29
prof_al 0:9b6fbe273511 30 /***************************************************************************
prof_al 0:9b6fbe273511 31 * FILE LOCAL DEFINITIONS
prof_al 0:9b6fbe273511 32 *
prof_al 0:9b6fbe273511 33 * In this section define
prof_al 0:9b6fbe273511 34 * - all file local macros
prof_al 0:9b6fbe273511 35 * - all file local define-constants
prof_al 0:9b6fbe273511 36 * - all file local ROM-constants (static)
prof_al 0:9b6fbe273511 37 * - all file local type definitions
prof_al 0:9b6fbe273511 38 * - all file local variables (static)
prof_al 0:9b6fbe273511 39 ****************************************************************************/
prof_al 0:9b6fbe273511 40 #define nShortDelay 20 /* Verzögerungszeit für I2C */
prof_al 0:9b6fbe273511 41
prof_al 0:9b6fbe273511 42
prof_al 0:9b6fbe273511 43 /***************************************************************************
prof_al 0:9b6fbe273511 44 * Variablendefinitionen
prof_al 0:9b6fbe273511 45 ****************************************************************************/
prof_al 0:9b6fbe273511 46
prof_al 0:9b6fbe273511 47
prof_al 0:9b6fbe273511 48 /***************************************************************************
prof_al 0:9b6fbe273511 49 * Definition der einzelnen I2C-Befehle
prof_al 0:9b6fbe273511 50 ****************************************************************************/
prof_al 0:9b6fbe273511 51 #define _0 0xb0
prof_al 0:9b6fbe273511 52 #define _1 0xb1
prof_al 0:9b6fbe273511 53 #define _2 0xb2
prof_al 0:9b6fbe273511 54 #define _3 0xb3
prof_al 0:9b6fbe273511 55 #define _4 0xb4
prof_al 0:9b6fbe273511 56 #define _5 0xb5
prof_al 0:9b6fbe273511 57 #define _6 0xb6
prof_al 0:9b6fbe273511 58 #define _7 0xb7
prof_al 0:9b6fbe273511 59 #define _8 0xb8
prof_al 0:9b6fbe273511 60 #define _9 0xb9
prof_al 0:9b6fbe273511 61
prof_al 0:9b6fbe273511 62 const byte abInit[] = {0x74, 0x00, 0x25, 0x06, 0x24, 0x0f, 0x84};
prof_al 0:9b6fbe273511 63 const byte abCls[] = {0x74, 0x00, 0x84};
prof_al 0:9b6fbe273511 64 const byte abText1[] = {0x74, 0x40, 0xe3, 0xa7, 0xf4, 0xad, 0xd2, 0xef, 0xe2};
prof_al 0:9b6fbe273511 65 const byte abZeile2[] = {0x74, 0x00, 0xc4};
prof_al 0:9b6fbe273511 66 const byte abNr0[] = {0x74, 0x40, 0xd3, 0xf4, 0xe1, 0xf4, 0xe5, 0xa0, _0};
prof_al 0:9b6fbe273511 67 const byte abNr1[] = {0x74, 0x40, 0xd3, 0xf4, 0xe1, 0xf4, 0xe5, 0xa0, _1};
prof_al 0:9b6fbe273511 68 const byte abNr2[] = {0x74, 0x40, 0xd3, 0xf4, 0xe1, 0xf4, 0xe5, 0xa0, _2};
prof_al 0:9b6fbe273511 69 const byte abNr3[] = {0x74, 0x40, 0xd3, 0xf4, 0xe1, 0xf4, 0xe5, 0xa0, _3};
prof_al 0:9b6fbe273511 70 const byte abNr4[] = {0x74, 0x40, 0xd3, 0xf4, 0xe1, 0xf4, 0xe5, 0xa0, _4};
prof_al 0:9b6fbe273511 71 const byte abNr5[] = {0x74, 0x40, 0xd3, 0xf4, 0xe1, 0xf4, 0xe5, 0xa0, _5};
prof_al 0:9b6fbe273511 72 const byte abNr6[] = {0x74, 0x40, 0xd3, 0xf4, 0xe1, 0xf4, 0xe5, 0xa0, _6};
prof_al 0:9b6fbe273511 73 const byte abNr7[] = {0x74, 0x40, 0xd3, 0xf4, 0xe1, 0xf4, 0xe5, 0xa0, _7};
prof_al 0:9b6fbe273511 74 const byte abNr8[] = {0x74, 0x40, 0xd3, 0xf4, 0xe1, 0xf4, 0xe5, 0xa0, _8};
prof_al 0:9b6fbe273511 75 const byte abNr9[] = {0x74, 0x40, 0xd3, 0xf4, 0xe1, 0xf4, 0xe5, 0xa0, _9};
prof_al 0:9b6fbe273511 76
prof_al 0:9b6fbe273511 77
prof_al 0:9b6fbe273511 78 /*****************************************************************************
prof_al 0:9b6fbe273511 79 Name: vStarti2c()
prof_al 0:9b6fbe273511 80 Parameters: none
prof_al 0:9b6fbe273511 81 Returns: nothing
prof_al 0:9b6fbe273511 82 Description: Generiert das Startsignal für I2C-Bus
prof_al 0:9b6fbe273511 83
prof_al 0:9b6fbe273511 84 ******************************************************************************/
prof_al 0:9b6fbe273511 85 void vStarti2c(void){
prof_al 0:9b6fbe273511 86 vDelay(nShortDelay);
prof_al 0:9b6fbe273511 87 SDA(); /* data high */
prof_al 0:9b6fbe273511 88 vDelay(nShortDelay);
prof_al 0:9b6fbe273511 89 SCL(); /* clk high */
prof_al 0:9b6fbe273511 90 vDelay(nShortDelay);
prof_al 0:9b6fbe273511 91 _SDA(); /* data low */
prof_al 0:9b6fbe273511 92 vDelay(nShortDelay);
prof_al 0:9b6fbe273511 93 _SCL(); /* clk low */
prof_al 0:9b6fbe273511 94 vDelay(nShortDelay);
prof_al 0:9b6fbe273511 95 }
prof_al 0:9b6fbe273511 96
prof_al 0:9b6fbe273511 97 /*****************************************************************************
prof_al 0:9b6fbe273511 98 Name: vStopi2c()
prof_al 0:9b6fbe273511 99 Parameters: none
prof_al 0:9b6fbe273511 100 Returns: nothing
prof_al 0:9b6fbe273511 101 Description: Generiert das Stopsignal für I2C-Bus
prof_al 0:9b6fbe273511 102
prof_al 0:9b6fbe273511 103 ******************************************************************************/
prof_al 0:9b6fbe273511 104 void vStopi2c(void){
prof_al 0:9b6fbe273511 105 vDelay(nShortDelay);
prof_al 0:9b6fbe273511 106 _SDA(); /* data low */
prof_al 0:9b6fbe273511 107 vDelay(nShortDelay);
prof_al 0:9b6fbe273511 108 SCL(); /* clk high */
prof_al 0:9b6fbe273511 109 vDelay(nShortDelay);
prof_al 0:9b6fbe273511 110 SDA(); /* data high */
prof_al 0:9b6fbe273511 111 vDelay(nShortDelay);
prof_al 0:9b6fbe273511 112 }
prof_al 0:9b6fbe273511 113
prof_al 0:9b6fbe273511 114
prof_al 0:9b6fbe273511 115 /*****************************************************************************
prof_al 0:9b6fbe273511 116 Name: vWriteBi2c()
prof_al 0:9b6fbe273511 117 Parameters: Byte
prof_al 0:9b6fbe273511 118 Returns: nothing
prof_al 0:9b6fbe273511 119 Description: Schreibt in Byte auf den I2C-Bus
prof_al 0:9b6fbe273511 120
prof_al 0:9b6fbe273511 121 ******************************************************************************/
prof_al 0:9b6fbe273511 122 void vWriteBi2c(byte bData){
prof_al 0:9b6fbe273511 123 byte i = 0;
prof_al 0:9b6fbe273511 124 vDelay(nShortDelay);
prof_al 0:9b6fbe273511 125 _SCL();
prof_al 0:9b6fbe273511 126 vDelay(nShortDelay);
prof_al 0:9b6fbe273511 127 for ( i = 0; i < 8; i++){
prof_al 0:9b6fbe273511 128 if ((bData & 0x80) == 0x80){
prof_al 0:9b6fbe273511 129 SDA(); /* Bit := 1 */
prof_al 0:9b6fbe273511 130 }
prof_al 0:9b6fbe273511 131 else{
prof_al 0:9b6fbe273511 132 _SDA(); /* Bit := 0 */
prof_al 0:9b6fbe273511 133 }
prof_al 0:9b6fbe273511 134 bData <<= 1;
prof_al 0:9b6fbe273511 135 vDelay(nShortDelay);
prof_al 0:9b6fbe273511 136 SCL();
prof_al 0:9b6fbe273511 137 vDelay(nShortDelay);
prof_al 0:9b6fbe273511 138 _SCL();
prof_al 0:9b6fbe273511 139 vDelay(nShortDelay);
prof_al 0:9b6fbe273511 140 }
prof_al 0:9b6fbe273511 141 _SDA();
prof_al 0:9b6fbe273511 142 vDelay(nShortDelay);
prof_al 0:9b6fbe273511 143 SCL();
prof_al 0:9b6fbe273511 144 vDelay(nShortDelay);
prof_al 0:9b6fbe273511 145 _SCL();
prof_al 0:9b6fbe273511 146 vDelay(nShortDelay);
prof_al 0:9b6fbe273511 147 }
prof_al 0:9b6fbe273511 148
prof_al 0:9b6fbe273511 149 /*****************************************************************************
prof_al 0:9b6fbe273511 150 Name: vDelay()
prof_al 0:9b6fbe273511 151 Parameters: Byte
prof_al 0:9b6fbe273511 152 Returns: nothing
prof_al 0:9b6fbe273511 153 Description: Laufzeitschleife
prof_al 0:9b6fbe273511 154
prof_al 0:9b6fbe273511 155 ******************************************************************************/
prof_al 0:9b6fbe273511 156 void vDelay(byte bTime){
prof_al 0:9b6fbe273511 157 while(bTime){
prof_al 0:9b6fbe273511 158 bTime--;
prof_al 0:9b6fbe273511 159 }
prof_al 0:9b6fbe273511 160 }
prof_al 0:9b6fbe273511 161
prof_al 0:9b6fbe273511 162 /*****************************************************************************
prof_al 0:9b6fbe273511 163 Name: vSendI2C()
prof_al 0:9b6fbe273511 164 Parameters: Zeichenanzahl, String
prof_al 0:9b6fbe273511 165 Returns: nothing
prof_al 0:9b6fbe273511 166 Description: Schickt den String zum I2C Bus
prof_al 0:9b6fbe273511 167
prof_al 0:9b6fbe273511 168 ******************************************************************************/
prof_al 0:9b6fbe273511 169 void vSendI2C(byte bLen, byte *pStr){
prof_al 0:9b6fbe273511 170 word w = 500;
prof_al 0:9b6fbe273511 171 while(w--);
prof_al 0:9b6fbe273511 172 vStarti2c();
prof_al 0:9b6fbe273511 173 while(bLen){
prof_al 0:9b6fbe273511 174 vWriteBi2c(*pStr);
prof_al 0:9b6fbe273511 175 pStr++;
prof_al 0:9b6fbe273511 176 bLen--;
prof_al 0:9b6fbe273511 177 }
prof_al 0:9b6fbe273511 178 vStopi2c();
prof_al 0:9b6fbe273511 179 }
prof_al 0:9b6fbe273511 180
prof_al 0:9b6fbe273511 181 /***************************************************************************
prof_al 0:9b6fbe273511 182 * Kurzbeschreibung : OV6620 (OV6630) initialisieren
prof_al 0:9b6fbe273511 183 * Uebergabeparameter : --
prof_al 0:9b6fbe273511 184 * Return Value : --
prof_al 0:9b6fbe273511 185 * Author : Jens Altenburg
prof_al 0:9b6fbe273511 186 ****************************************************************************/
prof_al 0:9b6fbe273511 187 void I2C_vInit( void ){
prof_al 0:9b6fbe273511 188 vSendI2C(sizeof(abInit), (byte *) &abInit[0]);
prof_al 0:9b6fbe273511 189 vSendI2C(sizeof(abCls), (byte *) &abCls[0]);
prof_al 0:9b6fbe273511 190 vSendI2C(sizeof(abText1), (byte *) &abText1[0]);
prof_al 0:9b6fbe273511 191 vSendI2C(sizeof(abZeile2), (byte *) &abZeile2[0]);
prof_al 0:9b6fbe273511 192 vSendI2C(sizeof(abNr0), (byte *) &abNr0[0]);
prof_al 0:9b6fbe273511 193 }
prof_al 0:9b6fbe273511 194
prof_al 0:9b6fbe273511 195 void I2C_vState(byte bState){
prof_al 0:9b6fbe273511 196 vSendI2C(sizeof(abZeile2), (byte *) &abZeile2[0]);
prof_al 0:9b6fbe273511 197 switch(bState){
prof_al 0:9b6fbe273511 198 case 0:
prof_al 0:9b6fbe273511 199 vSendI2C(sizeof(abNr0), (byte *) &abNr0[0]);
prof_al 0:9b6fbe273511 200 break;
prof_al 0:9b6fbe273511 201 case 1:
prof_al 0:9b6fbe273511 202 vSendI2C(sizeof(abNr1), (byte *) &abNr1[0]);
prof_al 0:9b6fbe273511 203 break;
prof_al 0:9b6fbe273511 204 case 2:
prof_al 0:9b6fbe273511 205 vSendI2C(sizeof(abNr2), (byte *) &abNr2[0]);
prof_al 0:9b6fbe273511 206 break;
prof_al 0:9b6fbe273511 207 case 3:
prof_al 0:9b6fbe273511 208 vSendI2C(sizeof(abNr3), (byte *) &abNr3[0]);
prof_al 0:9b6fbe273511 209 break;
prof_al 0:9b6fbe273511 210 case 4:
prof_al 0:9b6fbe273511 211 vSendI2C(sizeof(abNr4), (byte *) &abNr4[0]);
prof_al 0:9b6fbe273511 212 break;
prof_al 0:9b6fbe273511 213 case 5:
prof_al 0:9b6fbe273511 214 vSendI2C(sizeof(abNr5), (byte *) &abNr5[0]);
prof_al 0:9b6fbe273511 215 break;
prof_al 0:9b6fbe273511 216 case 6:
prof_al 0:9b6fbe273511 217 vSendI2C(sizeof(abNr6), (byte *) &abNr6[0]);
prof_al 0:9b6fbe273511 218 break;
prof_al 0:9b6fbe273511 219 case 7:
prof_al 0:9b6fbe273511 220 vSendI2C(sizeof(abNr7), (byte *) &abNr7[0]);
prof_al 0:9b6fbe273511 221 break;
prof_al 0:9b6fbe273511 222 case 8:
prof_al 0:9b6fbe273511 223 vSendI2C(sizeof(abNr8), (byte *) &abNr8[0]);
prof_al 0:9b6fbe273511 224 break;
prof_al 0:9b6fbe273511 225 case 9:
prof_al 0:9b6fbe273511 226 vSendI2C(sizeof(abNr9), (byte *) &abNr9[0]);
prof_al 0:9b6fbe273511 227 break;
prof_al 0:9b6fbe273511 228 }
prof_al 0:9b6fbe273511 229 }
prof_al 0:9b6fbe273511 230 /***************************************************************************
prof_al 0:9b6fbe273511 231 * EOF: SWMODxC1.C
prof_al 0:9b6fbe273511 232 ****************************************************************************/
prof_al 0:9b6fbe273511 233 #endif