minicube.net . / mbed-src-LPC1114FN28

Fork of mbed-src file paths change. LPC1114FN28 use only.

Fork of mbed-src by mbed official

Information

この情報は2013/10/28時点での解決方法です。
現在はmbed-src、標準ライブラリで問題なくコンパイルが可能です。

・使う物
LPC1114FN28
mbed SDK

LPC1114FN28でmbed-SDKのLibraryを使うとCompile出来ない。（2013/10/28） /media/uploads/minicube/mbed_lpc1114_sdk.png

パスが通ってないだけのようなのでファイルを以下に移動する。

mbed-src\targets\cmsis\TARGET_NXP\TARGET_LPC11XX_11CXX\
mbed-src\targets\cmsis\TARGET_NXP\TARGET_LPC11XX_11CXX\TARGET_LPC11XX\

にあるファイルをすべて

mbed-src\targets\cmsis\TARGET_NXP\

へ移動

mbed-src\targets\cmsis\TARGET_NXP\TARGET_LPC11XX_11CXX\にある

TOOLCHAIN_ARM_MICRO

をフォルダごと

mbed-src\targets\cmsis\TARGET_NXP\

へ移動

mbed-src\targets\hal\TARGET_NXP\TARGET_LPC11XX_11CXX\
mbed-src\targets\hal\TARGET_NXP\TARGET_LPC11XX_11CXX\TARGET_LPC11XX\

にあるファイルをすべて

mbed-src\targets\hal\TARGET_NXP\

へ移動

移動後は以下のような構成になると思います。
※不要なファイルは削除してあります。

/media/uploads/minicube/mbed_lpc1114_sdk_tree.png


ファイルの移動が面倒なので以下に本家からフォークしたライブラリを置いておきます。

Import librarymbed-src-LPC1114FN28

Fork of mbed-src file paths change. LPC1114FN28 use only.

Last commit 27 Oct 2013 by minicube.net .


エラーが出力される場合

"TOOLCHAIN_ARM_MICRO"が無いとエラーになる。

Error: Undefined symbol _initial_sp (referred from entry2.o).
Error: Undefined symbol _heap_base (referred from malloc.o).
Error: Undefined symbol _heap_limit (referred from malloc.o).

LPC1114FN28はMicrolibを使ってCompileされるため上記のエラーになるようです。

targets/hal/TARGET_NXP/i2c_api.c@43:b3acfef78949, 2013-10-27 (annotated)

Committer:
minicube
Date:
Sun Oct 27 20:12:31 2013 +0000
Revision:
43:b3acfef78949
Parent:
targets/hal/TARGET_NXP/TARGET_LPC11XX_11CXX/i2c_api.c@30:91c1d09ada54 
mbed SDK; LPC1114FN28 use only

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 30:91c1d09ada54 1 /* mbed Microcontroller Library
mbed_official 30:91c1d09ada54 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 30:91c1d09ada54 3 *
mbed_official 30:91c1d09ada54 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 30:91c1d09ada54 5 * you may not use this file except in compliance with the License.
mbed_official 30:91c1d09ada54 6 * You may obtain a copy of the License at
mbed_official 30:91c1d09ada54 7 *
mbed_official 30:91c1d09ada54 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 30:91c1d09ada54 9 *
mbed_official 30:91c1d09ada54 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 30:91c1d09ada54 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 30:91c1d09ada54 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 30:91c1d09ada54 13 * See the License for the specific language governing permissions and
mbed_official 30:91c1d09ada54 14 * limitations under the License.
mbed_official 30:91c1d09ada54 15 */
mbed_official 30:91c1d09ada54 16 #include "i2c_api.h"
mbed_official 30:91c1d09ada54 17 #include "cmsis.h"
mbed_official 30:91c1d09ada54 18 #include "pinmap.h"
mbed_official 30:91c1d09ada54 19 #include "error.h"
mbed_official 30:91c1d09ada54 20
mbed_official 30:91c1d09ada54 21 static const PinMap PinMap_I2C_SDA[] = {
mbed_official 30:91c1d09ada54 22 {P0_5, I2C_0, 1},
mbed_official 30:91c1d09ada54 23 {NC , NC , 0}
mbed_official 30:91c1d09ada54 24 };
mbed_official 30:91c1d09ada54 25
mbed_official 30:91c1d09ada54 26 static const PinMap PinMap_I2C_SCL[] = {
mbed_official 30:91c1d09ada54 27 {P0_4, I2C_0, 1},
mbed_official 30:91c1d09ada54 28 {NC , NC, 0}
mbed_official 30:91c1d09ada54 29 };
mbed_official 30:91c1d09ada54 30
mbed_official 30:91c1d09ada54 31 #define I2C_CONSET(x) (x->i2c->CONSET)
mbed_official 30:91c1d09ada54 32 #define I2C_CONCLR(x) (x->i2c->CONCLR)
mbed_official 30:91c1d09ada54 33 #define I2C_STAT(x) (x->i2c->STAT)
mbed_official 30:91c1d09ada54 34 #define I2C_DAT(x) (x->i2c->DAT)
mbed_official 30:91c1d09ada54 35 #define I2C_SCLL(x, val) (x->i2c->SCLL = val)
mbed_official 30:91c1d09ada54 36 #define I2C_SCLH(x, val) (x->i2c->SCLH = val)
mbed_official 30:91c1d09ada54 37
mbed_official 30:91c1d09ada54 38 static const uint32_t I2C_addr_offset[2][4] = {
mbed_official 30:91c1d09ada54 39 {0x0C, 0x20, 0x24, 0x28},
mbed_official 30:91c1d09ada54 40 {0x30, 0x34, 0x38, 0x3C}
mbed_official 30:91c1d09ada54 41 };
mbed_official 30:91c1d09ada54 42
mbed_official 30:91c1d09ada54 43 static inline void i2c_conclr(i2c_t *obj, int start, int stop, int interrupt, int acknowledge) {
mbed_official 30:91c1d09ada54 44 I2C_CONCLR(obj) = (start << 5)
mbed_official 30:91c1d09ada54 45 | (stop << 4)
mbed_official 30:91c1d09ada54 46 | (interrupt << 3)
mbed_official 30:91c1d09ada54 47 | (acknowledge << 2);
mbed_official 30:91c1d09ada54 48 }
mbed_official 30:91c1d09ada54 49
mbed_official 30:91c1d09ada54 50 static inline void i2c_conset(i2c_t *obj, int start, int stop, int interrupt, int acknowledge) {
mbed_official 30:91c1d09ada54 51 I2C_CONSET(obj) = (start << 5)
mbed_official 30:91c1d09ada54 52 | (stop << 4)
mbed_official 30:91c1d09ada54 53 | (interrupt << 3)
mbed_official 30:91c1d09ada54 54 | (acknowledge << 2);
mbed_official 30:91c1d09ada54 55 }
mbed_official 30:91c1d09ada54 56
mbed_official 30:91c1d09ada54 57 // Clear the Serial Interrupt (SI)
mbed_official 30:91c1d09ada54 58 static inline void i2c_clear_SI(i2c_t *obj) {
mbed_official 30:91c1d09ada54 59 i2c_conclr(obj, 0, 0, 1, 0);
mbed_official 30:91c1d09ada54 60 }
mbed_official 30:91c1d09ada54 61
mbed_official 30:91c1d09ada54 62 static inline int i2c_status(i2c_t *obj) {
mbed_official 30:91c1d09ada54 63 return I2C_STAT(obj);
mbed_official 30:91c1d09ada54 64 }
mbed_official 30:91c1d09ada54 65
mbed_official 30:91c1d09ada54 66 // Wait until the Serial Interrupt (SI) is set
mbed_official 30:91c1d09ada54 67 static int i2c_wait_SI(i2c_t *obj) {
mbed_official 30:91c1d09ada54 68 int timeout = 0;
mbed_official 30:91c1d09ada54 69 while (!(I2C_CONSET(obj) & (1 << 3))) {
mbed_official 30:91c1d09ada54 70 timeout++;
mbed_official 30:91c1d09ada54 71 if (timeout > 100000) return -1;
mbed_official 30:91c1d09ada54 72 }
mbed_official 30:91c1d09ada54 73 return 0;
mbed_official 30:91c1d09ada54 74 }
mbed_official 30:91c1d09ada54 75
mbed_official 30:91c1d09ada54 76 static inline void i2c_interface_enable(i2c_t *obj) {
mbed_official 30:91c1d09ada54 77 I2C_CONSET(obj) = 0x40;
mbed_official 30:91c1d09ada54 78 }
mbed_official 30:91c1d09ada54 79
mbed_official 30:91c1d09ada54 80 static inline void i2c_power_enable(i2c_t *obj) {
mbed_official 30:91c1d09ada54 81 LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 5);
mbed_official 30:91c1d09ada54 82 LPC_SYSCON->PRESETCTRL |= 1 << 1;
mbed_official 30:91c1d09ada54 83 }
mbed_official 30:91c1d09ada54 84
mbed_official 30:91c1d09ada54 85 void i2c_init(i2c_t *obj, PinName sda, PinName scl) {
mbed_official 30:91c1d09ada54 86 // determine the SPI to use
mbed_official 30:91c1d09ada54 87 I2CName i2c_sda = (I2CName)pinmap_peripheral(sda, PinMap_I2C_SDA);
mbed_official 30:91c1d09ada54 88 I2CName i2c_scl = (I2CName)pinmap_peripheral(scl, PinMap_I2C_SCL);
mbed_official 30:91c1d09ada54 89 obj->i2c = (LPC_I2C_TypeDef *)pinmap_merge(i2c_sda, i2c_scl);
mbed_official 30:91c1d09ada54 90
mbed_official 30:91c1d09ada54 91 if ((int)obj->i2c == NC) {
mbed_official 30:91c1d09ada54 92 error("I2C pin mapping failed");
mbed_official 30:91c1d09ada54 93 }
mbed_official 30:91c1d09ada54 94
mbed_official 30:91c1d09ada54 95 // enable power
mbed_official 30:91c1d09ada54 96 i2c_power_enable(obj);
mbed_official 30:91c1d09ada54 97
mbed_official 30:91c1d09ada54 98 // set default frequency at 100k
mbed_official 30:91c1d09ada54 99 i2c_frequency(obj, 100000);
mbed_official 30:91c1d09ada54 100 i2c_conclr(obj, 1, 1, 1, 1);
mbed_official 30:91c1d09ada54 101 i2c_interface_enable(obj);
mbed_official 30:91c1d09ada54 102
mbed_official 30:91c1d09ada54 103 pinmap_pinout(sda, PinMap_I2C_SDA);
mbed_official 30:91c1d09ada54 104 pinmap_pinout(scl, PinMap_I2C_SCL);
mbed_official 30:91c1d09ada54 105 }
mbed_official 30:91c1d09ada54 106
mbed_official 30:91c1d09ada54 107 inline int i2c_start(i2c_t *obj) {
mbed_official 30:91c1d09ada54 108 int status = 0;
mbed_official 30:91c1d09ada54 109 // 8.1 Before master mode can be entered, I2CON must be initialised to:
mbed_official 30:91c1d09ada54 110 // - I2EN STA STO SI AA - -
mbed_official 30:91c1d09ada54 111 // - 1 0 0 0 x - -
mbed_official 30:91c1d09ada54 112 // if AA = 0, it can't enter slave mode
mbed_official 30:91c1d09ada54 113 i2c_conclr(obj, 1, 1, 1, 1);
mbed_official 30:91c1d09ada54 114
mbed_official 30:91c1d09ada54 115 // The master mode may now be entered by setting the STA bit
mbed_official 30:91c1d09ada54 116 // this will generate a start condition when the bus becomes free
mbed_official 30:91c1d09ada54 117 i2c_conset(obj, 1, 0, 0, 1);
mbed_official 30:91c1d09ada54 118
mbed_official 30:91c1d09ada54 119 i2c_wait_SI(obj);
mbed_official 30:91c1d09ada54 120 status = i2c_status(obj);
mbed_official 30:91c1d09ada54 121
mbed_official 30:91c1d09ada54 122 // Clear start bit now transmitted, and interrupt bit
mbed_official 30:91c1d09ada54 123 i2c_conclr(obj, 1, 0, 0, 0);
mbed_official 30:91c1d09ada54 124 return status;
mbed_official 30:91c1d09ada54 125 }
mbed_official 30:91c1d09ada54 126
mbed_official 30:91c1d09ada54 127 inline int i2c_stop(i2c_t *obj) {
mbed_official 30:91c1d09ada54 128 int timeout = 0;
mbed_official 30:91c1d09ada54 129
mbed_official 30:91c1d09ada54 130 // write the stop bit
mbed_official 30:91c1d09ada54 131 i2c_conset(obj, 0, 1, 0, 0);
mbed_official 30:91c1d09ada54 132 i2c_clear_SI(obj);
mbed_official 30:91c1d09ada54 133
mbed_official 30:91c1d09ada54 134 // wait for STO bit to reset
mbed_official 30:91c1d09ada54 135 while(I2C_CONSET(obj) & (1 << 4)) {
mbed_official 30:91c1d09ada54 136 timeout ++;
mbed_official 30:91c1d09ada54 137 if (timeout > 100000) return 1;
mbed_official 30:91c1d09ada54 138 }
mbed_official 30:91c1d09ada54 139
mbed_official 30:91c1d09ada54 140 return 0;
mbed_official 30:91c1d09ada54 141 }
mbed_official 30:91c1d09ada54 142
mbed_official 30:91c1d09ada54 143
mbed_official 30:91c1d09ada54 144 static inline int i2c_do_write(i2c_t *obj, int value, uint8_t addr) {
mbed_official 30:91c1d09ada54 145 // write the data
mbed_official 30:91c1d09ada54 146 I2C_DAT(obj) = value;
mbed_official 30:91c1d09ada54 147
mbed_official 30:91c1d09ada54 148 // clear SI to init a send
mbed_official 30:91c1d09ada54 149 i2c_clear_SI(obj);
mbed_official 30:91c1d09ada54 150
mbed_official 30:91c1d09ada54 151 // wait and return status
mbed_official 30:91c1d09ada54 152 i2c_wait_SI(obj);
mbed_official 30:91c1d09ada54 153 return i2c_status(obj);
mbed_official 30:91c1d09ada54 154 }
mbed_official 30:91c1d09ada54 155
mbed_official 30:91c1d09ada54 156 static inline int i2c_do_read(i2c_t *obj, int last) {
mbed_official 30:91c1d09ada54 157 // we are in state 0x40 (SLA+R tx'd) or 0x50 (data rx'd and ack)
mbed_official 30:91c1d09ada54 158 if (last) {
mbed_official 30:91c1d09ada54 159 i2c_conclr(obj, 0, 0, 0, 1); // send a NOT ACK
mbed_official 30:91c1d09ada54 160 } else {
mbed_official 30:91c1d09ada54 161 i2c_conset(obj, 0, 0, 0, 1); // send a ACK
mbed_official 30:91c1d09ada54 162 }
mbed_official 30:91c1d09ada54 163
mbed_official 30:91c1d09ada54 164 // accept byte
mbed_official 30:91c1d09ada54 165 i2c_clear_SI(obj);
mbed_official 30:91c1d09ada54 166
mbed_official 30:91c1d09ada54 167 // wait for it to arrive
mbed_official 30:91c1d09ada54 168 i2c_wait_SI(obj);
mbed_official 30:91c1d09ada54 169
mbed_official 30:91c1d09ada54 170 // return the data
mbed_official 30:91c1d09ada54 171 return (I2C_DAT(obj) & 0xFF);
mbed_official 30:91c1d09ada54 172 }
mbed_official 30:91c1d09ada54 173
mbed_official 30:91c1d09ada54 174 void i2c_frequency(i2c_t *obj, int hz) {
mbed_official 30:91c1d09ada54 175 // No peripheral clock divider on the M0
mbed_official 30:91c1d09ada54 176 uint32_t PCLK = SystemCoreClock;
mbed_official 30:91c1d09ada54 177
mbed_official 30:91c1d09ada54 178 uint32_t pulse = PCLK / (hz * 2);
mbed_official 30:91c1d09ada54 179
mbed_official 30:91c1d09ada54 180 // I2C Rate
mbed_official 30:91c1d09ada54 181 I2C_SCLL(obj, pulse);
mbed_official 30:91c1d09ada54 182 I2C_SCLH(obj, pulse);
mbed_official 30:91c1d09ada54 183 }
mbed_official 30:91c1d09ada54 184
mbed_official 30:91c1d09ada54 185 // The I2C does a read or a write as a whole operation
mbed_official 30:91c1d09ada54 186 // There are two types of error conditions it can encounter
mbed_official 30:91c1d09ada54 187 // 1) it can not obtain the bus
mbed_official 30:91c1d09ada54 188 // 2) it gets error responses at part of the transmission
mbed_official 30:91c1d09ada54 189 //
mbed_official 30:91c1d09ada54 190 // We tackle them as follows:
mbed_official 30:91c1d09ada54 191 // 1) we retry until we get the bus. we could have a "timeout" if we can not get it
mbed_official 30:91c1d09ada54 192 // which basically turns it in to a 2)
mbed_official 30:91c1d09ada54 193 // 2) on error, we use the standard error mechanisms to report/debug
mbed_official 30:91c1d09ada54 194 //
mbed_official 30:91c1d09ada54 195 // Therefore an I2C transaction should always complete. If it doesn't it is usually
mbed_official 30:91c1d09ada54 196 // because something is setup wrong (e.g. wiring), and we don't need to programatically
mbed_official 30:91c1d09ada54 197 // check for that
mbed_official 30:91c1d09ada54 198
mbed_official 30:91c1d09ada54 199 int i2c_read(i2c_t *obj, int address, char *data, int length, int stop) {
mbed_official 30:91c1d09ada54 200 int count, status;
mbed_official 30:91c1d09ada54 201
mbed_official 30:91c1d09ada54 202 status = i2c_start(obj);
mbed_official 30:91c1d09ada54 203
mbed_official 30:91c1d09ada54 204 if ((status != 0x10) && (status != 0x08)) {
mbed_official 30:91c1d09ada54 205 i2c_stop(obj);
mbed_official 30:91c1d09ada54 206 return I2C_ERROR_BUS_BUSY;
mbed_official 30:91c1d09ada54 207 }
mbed_official 30:91c1d09ada54 208
mbed_official 30:91c1d09ada54 209 status = i2c_do_write(obj, (address | 0x01), 1);
mbed_official 30:91c1d09ada54 210 if (status != 0x40) {
mbed_official 30:91c1d09ada54 211 i2c_stop(obj);
mbed_official 30:91c1d09ada54 212 return I2C_ERROR_NO_SLAVE;
mbed_official 30:91c1d09ada54 213 }
mbed_official 30:91c1d09ada54 214
mbed_official 30:91c1d09ada54 215 // Read in all except last byte
mbed_official 30:91c1d09ada54 216 for (count = 0; count < (length - 1); count++) {
mbed_official 30:91c1d09ada54 217 int value = i2c_do_read(obj, 0);
mbed_official 30:91c1d09ada54 218 status = i2c_status(obj);
mbed_official 30:91c1d09ada54 219 if (status != 0x50) {
mbed_official 30:91c1d09ada54 220 i2c_stop(obj);
mbed_official 30:91c1d09ada54 221 return count;
mbed_official 30:91c1d09ada54 222 }
mbed_official 30:91c1d09ada54 223 data[count] = (char) value;
mbed_official 30:91c1d09ada54 224 }
mbed_official 30:91c1d09ada54 225
mbed_official 30:91c1d09ada54 226 // read in last byte
mbed_official 30:91c1d09ada54 227 int value = i2c_do_read(obj, 1);
mbed_official 30:91c1d09ada54 228 status = i2c_status(obj);
mbed_official 30:91c1d09ada54 229 if (status != 0x58) {
mbed_official 30:91c1d09ada54 230 i2c_stop(obj);
mbed_official 30:91c1d09ada54 231 return length - 1;
mbed_official 30:91c1d09ada54 232 }
mbed_official 30:91c1d09ada54 233
mbed_official 30:91c1d09ada54 234 data[count] = (char) value;
mbed_official 30:91c1d09ada54 235
mbed_official 30:91c1d09ada54 236 // If not repeated start, send stop.
mbed_official 30:91c1d09ada54 237 if (stop) {
mbed_official 30:91c1d09ada54 238 i2c_stop(obj);
mbed_official 30:91c1d09ada54 239 }
mbed_official 30:91c1d09ada54 240
mbed_official 30:91c1d09ada54 241 return length;
mbed_official 30:91c1d09ada54 242 }
mbed_official 30:91c1d09ada54 243
mbed_official 30:91c1d09ada54 244 int i2c_write(i2c_t *obj, int address, const char *data, int length, int stop) {
mbed_official 30:91c1d09ada54 245 int i, status;
mbed_official 30:91c1d09ada54 246
mbed_official 30:91c1d09ada54 247 status = i2c_start(obj);
mbed_official 30:91c1d09ada54 248
mbed_official 30:91c1d09ada54 249 if ((status != 0x10) && (status != 0x08)) {
mbed_official 30:91c1d09ada54 250 i2c_stop(obj);
mbed_official 30:91c1d09ada54 251 return I2C_ERROR_BUS_BUSY;
mbed_official 30:91c1d09ada54 252 }
mbed_official 30:91c1d09ada54 253
mbed_official 30:91c1d09ada54 254 status = i2c_do_write(obj, (address & 0xFE), 1);
mbed_official 30:91c1d09ada54 255 if (status != 0x18) {
mbed_official 30:91c1d09ada54 256 i2c_stop(obj);
mbed_official 30:91c1d09ada54 257 return I2C_ERROR_NO_SLAVE;
mbed_official 30:91c1d09ada54 258 }
mbed_official 30:91c1d09ada54 259
mbed_official 30:91c1d09ada54 260 for (i=0; i<length; i++) {
mbed_official 30:91c1d09ada54 261 status = i2c_do_write(obj, data[i], 0);
mbed_official 30:91c1d09ada54 262 if(status != 0x28) {
mbed_official 30:91c1d09ada54 263 i2c_stop(obj);
mbed_official 30:91c1d09ada54 264 return i;
mbed_official 30:91c1d09ada54 265 }
mbed_official 30:91c1d09ada54 266 }
mbed_official 30:91c1d09ada54 267
mbed_official 30:91c1d09ada54 268 // clearing the serial interrupt here might cause an unintended rewrite of the last byte
mbed_official 30:91c1d09ada54 269 // see also issue report https://mbed.org/users/mbed_official/code/mbed/issues/1
mbed_official 30:91c1d09ada54 270 // i2c_clear_SI(obj);
mbed_official 30:91c1d09ada54 271
mbed_official 30:91c1d09ada54 272 // If not repeated start, send stop.
mbed_official 30:91c1d09ada54 273 if (stop) {
mbed_official 30:91c1d09ada54 274 i2c_stop(obj);
mbed_official 30:91c1d09ada54 275 }
mbed_official 30:91c1d09ada54 276
mbed_official 30:91c1d09ada54 277 return length;
mbed_official 30:91c1d09ada54 278 }
mbed_official 30:91c1d09ada54 279
mbed_official 30:91c1d09ada54 280 void i2c_reset(i2c_t *obj) {
mbed_official 30:91c1d09ada54 281 i2c_stop(obj);
mbed_official 30:91c1d09ada54 282 }
mbed_official 30:91c1d09ada54 283
mbed_official 30:91c1d09ada54 284 int i2c_byte_read(i2c_t *obj, int last) {
mbed_official 30:91c1d09ada54 285 return (i2c_do_read(obj, last) & 0xFF);
mbed_official 30:91c1d09ada54 286 }
mbed_official 30:91c1d09ada54 287
mbed_official 30:91c1d09ada54 288 int i2c_byte_write(i2c_t *obj, int data) {
mbed_official 30:91c1d09ada54 289 int ack;
mbed_official 30:91c1d09ada54 290 int status = i2c_do_write(obj, (data & 0xFF), 0);
mbed_official 30:91c1d09ada54 291
mbed_official 30:91c1d09ada54 292 switch(status) {
mbed_official 30:91c1d09ada54 293 case 0x18: case 0x28: // Master transmit ACKs
mbed_official 30:91c1d09ada54 294 ack = 1;
mbed_official 30:91c1d09ada54 295 break;
mbed_official 30:91c1d09ada54 296 case 0x40: // Master receive address transmitted ACK
mbed_official 30:91c1d09ada54 297 ack = 1;
mbed_official 30:91c1d09ada54 298 break;
mbed_official 30:91c1d09ada54 299 case 0xB8: // Slave transmit ACK
mbed_official 30:91c1d09ada54 300 ack = 1;
mbed_official 30:91c1d09ada54 301 break;
mbed_official 30:91c1d09ada54 302 default:
mbed_official 30:91c1d09ada54 303 ack = 0;
mbed_official 30:91c1d09ada54 304 break;
mbed_official 30:91c1d09ada54 305 }
mbed_official 30:91c1d09ada54 306
mbed_official 30:91c1d09ada54 307 return ack;
mbed_official 30:91c1d09ada54 308 }
mbed_official 30:91c1d09ada54 309
mbed_official 30:91c1d09ada54 310 void i2c_slave_mode(i2c_t *obj, int enable_slave) {
mbed_official 30:91c1d09ada54 311 if (enable_slave != 0) {
mbed_official 30:91c1d09ada54 312 i2c_conclr(obj, 1, 1, 1, 0);
mbed_official 30:91c1d09ada54 313 i2c_conset(obj, 0, 0, 0, 1);
mbed_official 30:91c1d09ada54 314 } else {
mbed_official 30:91c1d09ada54 315 i2c_conclr(obj, 1, 1, 1, 1);
mbed_official 30:91c1d09ada54 316 }
mbed_official 30:91c1d09ada54 317 }
mbed_official 30:91c1d09ada54 318
mbed_official 30:91c1d09ada54 319 int i2c_slave_receive(i2c_t *obj) {
mbed_official 30:91c1d09ada54 320 int status;
mbed_official 30:91c1d09ada54 321 int retval;
mbed_official 30:91c1d09ada54 322
mbed_official 30:91c1d09ada54 323 status = i2c_status(obj);
mbed_official 30:91c1d09ada54 324 switch(status) {
mbed_official 30:91c1d09ada54 325 case 0x60: retval = 3; break;
mbed_official 30:91c1d09ada54 326 case 0x70: retval = 2; break;
mbed_official 30:91c1d09ada54 327 case 0xA8: retval = 1; break;
mbed_official 30:91c1d09ada54 328 default : retval = 0; break;
mbed_official 30:91c1d09ada54 329 }
mbed_official 30:91c1d09ada54 330
mbed_official 30:91c1d09ada54 331 return(retval);
mbed_official 30:91c1d09ada54 332 }
mbed_official 30:91c1d09ada54 333
mbed_official 30:91c1d09ada54 334 int i2c_slave_read(i2c_t *obj, char *data, int length) {
mbed_official 30:91c1d09ada54 335 int count = 0;
mbed_official 30:91c1d09ada54 336 int status;
mbed_official 30:91c1d09ada54 337
mbed_official 30:91c1d09ada54 338 do {
mbed_official 30:91c1d09ada54 339 i2c_clear_SI(obj);
mbed_official 30:91c1d09ada54 340 i2c_wait_SI(obj);
mbed_official 30:91c1d09ada54 341 status = i2c_status(obj);
mbed_official 30:91c1d09ada54 342 if((status == 0x80) || (status == 0x90)) {
mbed_official 30:91c1d09ada54 343 data[count] = I2C_DAT(obj) & 0xFF;
mbed_official 30:91c1d09ada54 344 }
mbed_official 30:91c1d09ada54 345 count++;
mbed_official 30:91c1d09ada54 346 } while (((status == 0x80) || (status == 0x90) ||
mbed_official 30:91c1d09ada54 347 (status == 0x060) || (status == 0x70)) && (count < length));
mbed_official 30:91c1d09ada54 348
mbed_official 30:91c1d09ada54 349 if(status != 0xA0) {
mbed_official 30:91c1d09ada54 350 i2c_stop(obj);
mbed_official 30:91c1d09ada54 351 }
mbed_official 30:91c1d09ada54 352
mbed_official 30:91c1d09ada54 353 i2c_clear_SI(obj);
mbed_official 30:91c1d09ada54 354
mbed_official 30:91c1d09ada54 355 return count;
mbed_official 30:91c1d09ada54 356 }
mbed_official 30:91c1d09ada54 357
mbed_official 30:91c1d09ada54 358 int i2c_slave_write(i2c_t *obj, const char *data, int length) {
mbed_official 30:91c1d09ada54 359 int count = 0;
mbed_official 30:91c1d09ada54 360 int status;
mbed_official 30:91c1d09ada54 361
mbed_official 30:91c1d09ada54 362 if(length <= 0) {
mbed_official 30:91c1d09ada54 363 return(0);
mbed_official 30:91c1d09ada54 364 }
mbed_official 30:91c1d09ada54 365
mbed_official 30:91c1d09ada54 366 do {
mbed_official 30:91c1d09ada54 367 status = i2c_do_write(obj, data[count], 0);
mbed_official 30:91c1d09ada54 368 count++;
mbed_official 30:91c1d09ada54 369 } while ((count < length) && (status == 0xB8));
mbed_official 30:91c1d09ada54 370
mbed_official 30:91c1d09ada54 371 if((status != 0xC0) && (status != 0xC8)) {
mbed_official 30:91c1d09ada54 372 i2c_stop(obj);
mbed_official 30:91c1d09ada54 373 }
mbed_official 30:91c1d09ada54 374
mbed_official 30:91c1d09ada54 375 i2c_clear_SI(obj);
mbed_official 30:91c1d09ada54 376
mbed_official 30:91c1d09ada54 377 return(count);
mbed_official 30:91c1d09ada54 378 }
mbed_official 30:91c1d09ada54 379
mbed_official 30:91c1d09ada54 380 void i2c_slave_address(i2c_t *obj, int idx, uint32_t address, uint32_t mask) {
mbed_official 30:91c1d09ada54 381 uint32_t addr;
mbed_official 30:91c1d09ada54 382
mbed_official 30:91c1d09ada54 383 if ((idx >= 0) && (idx <= 3)) {
mbed_official 30:91c1d09ada54 384 addr = ((uint32_t)obj->i2c) + I2C_addr_offset[0][idx];
mbed_official 30:91c1d09ada54 385 *((uint32_t *) addr) = address & 0xFF;
mbed_official 30:91c1d09ada54 386 addr = ((uint32_t)obj->i2c) + I2C_addr_offset[1][idx];
mbed_official 30:91c1d09ada54 387 *((uint32_t *) addr) = mask & 0xFE;
mbed_official 30:91c1d09ada54 388 }
mbed_official 30:91c1d09ada54 389 }