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| 1 | /*#######################################################################################*/ |
1 | /*#######################################################################################*/ |
| 2 | /* !!! THIS IS NOT FREE SOFTWARE !!! */ |
2 | /* !!! THIS IS NOT FREE SOFTWARE !!! */ |
| 3 | /*#######################################################################################*/ |
3 | /*#######################################################################################*/ |
| 4 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
4 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| 5 | // + Copyright (c) 2008 Ingo Busker, Holger Buss |
5 | // + Copyright (c) 2008 Ingo Busker, Holger Buss |
| 6 | // + Nur für den privaten Gebrauch / NON-COMMERCIAL USE ONLY |
6 | // + Nur für den privaten Gebrauch / NON-COMMERCIAL USE ONLY |
| 7 | // + FOR NON COMMERCIAL USE ONLY |
7 | // + FOR NON COMMERCIAL USE ONLY |
| 8 | // + www.MikroKopter.com |
8 | // + www.MikroKopter.com |
| 9 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
9 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| 10 | // + Es gilt für das gesamte Projekt (Hardware, Software, Binärfiles, Sourcecode und Dokumentation), |
10 | // + Es gilt für das gesamte Projekt (Hardware, Software, Binärfiles, Sourcecode und Dokumentation), |
| 11 | // + dass eine Nutzung (auch auszugsweise) nur für den privaten (nicht-kommerziellen) Gebrauch zulässig ist. |
11 | // + dass eine Nutzung (auch auszugsweise) nur für den privaten (nicht-kommerziellen) Gebrauch zulässig ist. |
| 12 | // + Sollten direkte oder indirekte kommerzielle Absichten verfolgt werden, ist mit uns (info@mikrokopter.de) Kontakt |
12 | // + Sollten direkte oder indirekte kommerzielle Absichten verfolgt werden, ist mit uns (info@mikrokopter.de) Kontakt |
| 13 | // + bzgl. der Nutzungsbedingungen aufzunehmen. |
13 | // + bzgl. der Nutzungsbedingungen aufzunehmen. |
| 14 | // + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen, |
14 | // + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen, |
| 15 | // + Verkauf von Luftbildaufnahmen, usw. |
15 | // + Verkauf von Luftbildaufnahmen, usw. |
| 16 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
16 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| 17 | // + Werden Teile des Quellcodes (mit oder ohne Modifikation) weiterverwendet oder veröffentlicht, |
17 | // + Werden Teile des Quellcodes (mit oder ohne Modifikation) weiterverwendet oder veröffentlicht, |
| 18 | // + unterliegen sie auch diesen Nutzungsbedingungen und diese Nutzungsbedingungen incl. Copyright müssen dann beiliegen |
18 | // + unterliegen sie auch diesen Nutzungsbedingungen und diese Nutzungsbedingungen incl. Copyright müssen dann beiliegen |
| 19 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
19 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| 20 | // + Sollte die Software (auch auszugesweise) oder sonstige Informationen des MikroKopter-Projekts |
20 | // + Sollte die Software (auch auszugesweise) oder sonstige Informationen des MikroKopter-Projekts |
| 21 | // + auf anderen Webseiten oder sonstigen Medien veröffentlicht werden, muss unsere Webseite "http://www.mikrokopter.de" |
21 | // + auf anderen Webseiten oder sonstigen Medien veröffentlicht werden, muss unsere Webseite "http://www.mikrokopter.de" |
| 22 | // + eindeutig als Ursprung verlinkt werden |
22 | // + eindeutig als Ursprung verlinkt werden |
| 23 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
23 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| 24 | // + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion |
24 | // + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion |
| 25 | // + Benutzung auf eigene Gefahr |
25 | // + Benutzung auf eigene Gefahr |
| 26 | // + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden |
26 | // + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden |
| 27 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
27 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| 28 | // + Die Portierung oder Nutzung der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur |
28 | // + Die Portierung oder Nutzung der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur |
| 29 | // + mit unserer Zustimmung zulässig |
29 | // + mit unserer Zustimmung zulässig |
| 30 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
30 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| 31 | // + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen |
31 | // + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen |
| 32 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
32 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| 33 | // + Redistributions of source code (with or without modifications) must retain the above copyright notice, |
33 | // + Redistributions of source code (with or without modifications) must retain the above copyright notice, |
| 34 | // + this list of conditions and the following disclaimer. |
34 | // + this list of conditions and the following disclaimer. |
| 35 | // + * Neither the name of the copyright holders nor the names of contributors may be used to endorse or promote products derived |
35 | // + * Neither the name of the copyright holders nor the names of contributors may be used to endorse or promote products derived |
| 36 | // + from this software without specific prior written permission. |
36 | // + from this software without specific prior written permission. |
| 37 | // + * The use of this project (hardware, software, binary files, sources and documentation) is only permitted |
37 | // + * The use of this project (hardware, software, binary files, sources and documentation) is only permitted |
| 38 | // + for non-commercial use (directly or indirectly) |
38 | // + for non-commercial use (directly or indirectly) |
| 39 | // + Commercial use (for excample: selling of MikroKopters, selling of PCBs, assembly, ...) is only permitted |
39 | // + Commercial use (for excample: selling of MikroKopters, selling of PCBs, assembly, ...) is only permitted |
| 40 | // + with our written permission |
40 | // + with our written permission |
| 41 | // + * If sources or documentations are redistributet on other webpages, out webpage (http://www.MikroKopter.de) must be |
41 | // + * If sources or documentations are redistributet on other webpages, out webpage (http://www.MikroKopter.de) must be |
| 42 | // + clearly linked as origin |
42 | // + clearly linked as origin |
| 43 | // + * porting the sources to other systems or using the software on other systems (except hardware from www.mikrokopter.de) is not allowed |
43 | // + * porting the sources to other systems or using the software on other systems (except hardware from www.mikrokopter.de) is not allowed |
| 44 | // |
44 | // |
| 45 | // + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
45 | // + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 46 | // + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
46 | // + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 47 | // + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
47 | // + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 48 | // + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
48 | // + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 49 | // + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
49 | // + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 50 | // + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
50 | // + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 51 | // + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
51 | // + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 52 | // + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
52 | // + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 53 | // + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
53 | // + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 54 | // + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
54 | // + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 55 | // + POSSIBILITY OF SUCH DAMAGE. |
55 | // + POSSIBILITY OF SUCH DAMAGE. |
| 56 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
56 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| 57 | #include <string.h> |
57 | #include <string.h> |
| 58 | #include <stdio.h> |
58 | #include <stdio.h> |
| 59 | #include "91x_lib.h" |
59 | #include "91x_lib.h" |
| 60 | #include "i2c.h" |
60 | #include "i2c.h" |
| 61 | #include "uart1.h" |
61 | #include "uart1.h" |
| 62 | #include "timer1.h" |
62 | #include "timer1.h" |
| 63 | #include "eeprom.h" |
63 | #include "eeprom.h" |
| 64 | 64 | ||
| 65 | 65 | ||
| 66 | // The EEPROM M24C64 (64k) ist connected via I2C1 interface to the controller. |
66 | // The EEPROM M24C64 (64k) ist connected via I2C1 interface to the controller. |
| 67 | // The E0, E2, E3 pins are set to low. Therefore the slave adressbits b3, b2, b1 are 0. |
67 | // The E0, E2, E3 pins are set to low. Therefore the slave adressbits b3, b2, b1 are 0. |
| 68 | 68 | ||
| 69 | #define EEPROM_I2C_ADDRESS 0xA0 |
69 | #define EEPROM_I2C_ADDRESS 0xA0 |
| 70 | #define EEPROM_SIZE 65536L // 64k bytes |
70 | #define EEPROM_SIZE 65536L // 64k bytes |
| 71 | #define EEPROM_WRITE 1 |
71 | #define EEPROM_WRITE 1 |
| 72 | #define EEPROM_READ 0 |
72 | #define EEPROM_READ 0 |
| 73 | 73 | ||
| 74 | // timing |
74 | // timing |
| 75 | #define I2C_IDLE_TIMEOUT 150 // 150 ms |
75 | #define I2C_IDLE_TIMEOUT 150 // 150 ms |
| 76 | #define I2C_TRANSFER_TIMEOUT 150 // 150 ms |
76 | #define I2C_TRANSFER_TIMEOUT 150 // 150 ms |
| 77 | #define I2C_ACCESS_RETRYS 20 // retry 20 times |
77 | #define I2C_ACCESS_RETRYS 20 // retry 20 times |
| 78 | 78 | ||
| 79 | // globals for rx handler |
79 | // globals for rx handler |
| 80 | volatile u8 *EEPROM_pData = 0; |
80 | volatile u8 *EEPROM_pData = 0; |
| 81 | volatile u16 EEPROM_DataLen = 0; |
81 | volatile u16 EEPROM_DataLen = 0; |
| 82 | 82 | ||
| 83 | // rx data handler for eeprom data read access |
83 | // rx data handler for eeprom data read access |
| 84 | void EEPROM_RxDataHandler(u8* pRxBuffer, u8 RxBufferSize) |
84 | void EEPROM_RxDataHandler(u8* pRxBuffer, u8 RxBufferSize) |
| 85 | { // if number of byte are matching |
85 | { // if number of byte are matching |
| 86 | if((RxBufferSize == EEPROM_DataLen)) |
86 | if((RxBufferSize == EEPROM_DataLen)) |
| 87 | { //copy data from primary buffer to target buffer |
87 | { //copy data from primary buffer to target buffer |
| 88 | if(EEPROM_pData) memcpy((u8*)EEPROM_pData, pRxBuffer, EEPROM_DataLen); |
88 | if(EEPROM_pData) memcpy((u8*)EEPROM_pData, pRxBuffer, EEPROM_DataLen); |
| 89 | } |
89 | } |
| 90 | } |
90 | } |
| 91 | 91 | ||
| 92 | // ---------------------------------------------------------------------------------------- |
92 | // ---------------------------------------------------------------------------------------- |
| 93 | EEPROM_Result_t EEPROM_Transfer(u8 Direction, u16 Address, u8 *pData, u16 DataLen) |
93 | EEPROM_Result_t EEPROM_Transfer(u8 Direction, u16 Address, u8 *pData, u16 DataLen) |
| 94 | { |
94 | { |
| 95 | u16 i, TxBytes = 0; |
95 | u16 i, TxBytes = 0; |
| 96 | u8 retry = 0; |
96 | u8 retry = 0; |
| 97 | EEPROM_Result_t retval = EEPROM_ERROR_UNKNOWN; |
97 | EEPROM_Result_t retval = EEPROM_ERROR_UNKNOWN; |
| 98 | 98 | ||
| 99 | if(((u32)Address + (u32)DataLen) >= (EEPROM_SIZE - 1)) |
99 | if(((u32)Address + (u32)DataLen) >= (EEPROM_SIZE - 1)) |
| 100 | { |
100 | { |
| 101 | retval = EEPROM_ERROR_OUT_OF_ADDRESS_RANGE; |
101 | retval = EEPROM_ERROR_OUT_OF_ADDRESS_RANGE; |
| 102 | return(retval); |
102 | return(retval); |
| 103 | } |
103 | } |
| 104 | if((DataLen+2) > I2C_BUFFER_LEN) |
104 | if((DataLen+2) > I2C_BUFFER_LEN) |
| 105 | { |
105 | { |
| 106 | retval = EEPROM_I2C_BUFFER_OVERRUN; |
106 | retval = EEPROM_I2C_BUFFER_OVERRUN; |
| 107 | return(retval); |
107 | return(retval); |
| 108 | } |
108 | } |
| 109 | do |
109 | do |
| 110 | { |
110 | { |
| 111 | if(!I2C_LockBuffer(I2C_IDLE_TIMEOUT)) return EEPROM_ERROR_I2C_IDLE_TIMEOUT; |
111 | if(!I2C_LockBuffer(I2C_IDLE_TIMEOUT)) return EEPROM_ERROR_I2C_IDLE_TIMEOUT; |
| 112 | // buffer is now locked |
112 | // buffer is now locked |
| 113 | TxBytes = 0; |
113 | TxBytes = 0; |
| 114 | // transmitt address |
114 | // transmitt address |
| 115 | I2C_Buffer[TxBytes++] = (u8)(0x00FF & (Address>>8)); |
115 | I2C_Buffer[TxBytes++] = (u8)(0x00FF & (Address>>8)); |
| 116 | I2C_Buffer[TxBytes++] = (u8)(0x00FF & Address); |
116 | I2C_Buffer[TxBytes++] = (u8)(0x00FF & Address); |
| 117 | if(Direction == EEPROM_WRITE) |
117 | if(Direction == EEPROM_WRITE) |
| 118 | { // copy data to i2c transfer buffer |
118 | { // copy data to i2c transfer buffer |
| 119 | for(i = 0; i<DataLen;i++) |
119 | for(i = 0; i<DataLen;i++) |
| 120 | { |
120 | { |
| 121 | I2C_Buffer[TxBytes++] = pData[i]; |
121 | I2C_Buffer[TxBytes++] = pData[i]; |
| 122 | } |
122 | } |
| 123 | // prepare pointer to rx data |
123 | // prepare pointer to rx data |
| 124 | EEPROM_pData = 0; |
124 | EEPROM_pData = 0; |
| 125 | EEPROM_DataLen = 0; |
125 | EEPROM_DataLen = 0; |
| 126 | // start transmission |
126 | // start transmission |
| 127 | if(!I2C_Transmission(EEPROM_I2C_ADDRESS, TxBytes, 0, 0)) |
127 | if(!I2C_Transmission(EEPROM_I2C_ADDRESS, TxBytes, 0, 0)) |
| 128 | { |
128 | { |
| 129 | return(retval); |
129 | return(retval); |
| 130 | } |
130 | } |
| 131 | } |
131 | } |
| 132 | else // Direction == EEPROM_READ |
132 | else // Direction == EEPROM_READ |
| 133 | { |
133 | { |
| 134 | // prepare pointer to rx data |
134 | // prepare pointer to rx data |
| 135 | EEPROM_pData = pData; |
135 | EEPROM_pData = pData; |
| 136 | EEPROM_DataLen = DataLen; |
136 | EEPROM_DataLen = DataLen; |
| 137 | // start transmission |
137 | // start transmission |
| 138 | if(!I2C_Transmission(EEPROM_I2C_ADDRESS, TxBytes, &EEPROM_RxDataHandler, DataLen)) |
138 | if(!I2C_Transmission(EEPROM_I2C_ADDRESS, TxBytes, &EEPROM_RxDataHandler, DataLen)) |
| 139 | { |
139 | { |
| 140 | return(retval); |
140 | return(retval); |
| 141 | } |
141 | } |
| 142 | } |
142 | } |
| 143 | //wait for end of this transfer |
143 | //wait for end of this transfer |
| 144 | if(I2C_WaitForEndOfTransmission(I2C_TRANSFER_TIMEOUT)) |
144 | if(I2C_WaitForEndOfTransmission(I2C_TRANSFER_TIMEOUT)) |
| 145 | { |
145 | { |
| 146 | DebugOut.Analog[26] = I2C_Error; |
- | |
| 147 | if(I2C_Error == I2C_ERROR_NONE) retval = EEPROM_SUCCESS; |
146 | if(I2C_Error == I2C_ERROR_NONE) return(EEPROM_SUCCESS); |
| 148 | else retval = EEPROM_ERROR_I2C_TRANSFER_TIMEOUT; |
147 | else retval = EEPROM_DATA_TRANSFER_INCOMPLETE; |
| - | 148 | } |
|
| - | 149 | else// i2c transfer timed out |
|
| 149 | break; |
150 | { |
| - | 151 | return(EEPROM_ERROR_I2C_TRANSFER_TIMEOUT); |
|
| 150 | } |
152 | } |
| 151 | // or retry |
153 | // or retry |
| 152 | I2C_State = I2C_STATE_IDLE; |
- | |
| 153 | } while(++retry < I2C_ACCESS_RETRYS); |
154 | } while(++retry < I2C_ACCESS_RETRYS); |
| 154 | return(retval); |
155 | return(retval); |
| 155 | } |
156 | } |
| 156 | 157 | ||
| 157 | EEPROM_Result_t EEPROM_WriteBlock(u16 Address, u8 *pData, u16 DataLen) |
158 | EEPROM_Result_t EEPROM_WriteBlock(u16 Address, u8 *pData, u16 DataLen) |
| 158 | { |
159 | { |
| 159 | u16 len; |
160 | u16 len; |
| 160 | EEPROM_Result_t retval; |
161 | EEPROM_Result_t retval; |
| 161 | 162 | ||
| 162 | // there can be 32 bytes written in a single cycle if the adresses are locates in the same row |
163 | // there can be 32 bytes written in a single cycle if the adresses are locates in the same row |
| 163 | // i.e. the upper 11 bits of the addres are constant |
164 | // i.e. the upper 11 bits of the addres are constant |
| 164 | #define EEPROM_WRITE_BLOCK_SIZE 32 |
165 | #define EEPROM_WRITE_BLOCK_SIZE 32 |
| 165 | 166 | ||
| 166 | len = EEPROM_WRITE_BLOCK_SIZE - Address%EEPROM_WRITE_BLOCK_SIZE; // number of bytes to match the next row |
167 | len = EEPROM_WRITE_BLOCK_SIZE - Address%EEPROM_WRITE_BLOCK_SIZE; // number of bytes to match the next row |
| 167 | if(len >= DataLen) len = DataLen; // do not write more than neccesarry |
168 | if(len >= DataLen) len = DataLen; // do not write more than neccesarry |
| 168 | 169 | ||
| 169 | do |
170 | do |
| 170 | { |
171 | { |
| 171 | retval = EEPROM_Transfer(EEPROM_WRITE, Address, pData, len); |
172 | retval = EEPROM_Transfer(EEPROM_WRITE, Address, pData, len); |
| 172 | Address += len; // Address of the next row |
173 | Address += len; // Address of the next row |
| 173 | pData += len; // pointer to start of next data block |
174 | pData += len; // pointer to start of next data block |
| 174 | DataLen -= len; // reduce the number of to be transmitted |
175 | DataLen -= len; // reduce the number of to be transmitted |
| 175 | if(DataLen > EEPROM_WRITE_BLOCK_SIZE) len = EEPROM_WRITE_BLOCK_SIZE; // limit next block size to 32 |
176 | if(DataLen > EEPROM_WRITE_BLOCK_SIZE) len = EEPROM_WRITE_BLOCK_SIZE; // limit next block size to 32 |
| 176 | else len = DataLen; |
177 | else len = DataLen; |
| 177 | } |
178 | } |
| 178 | while(DataLen && (retval == EEPROM_SUCCESS)); // repeat until all data have been sent and no error has occured |
179 | while(DataLen && (retval == EEPROM_SUCCESS)); // repeat until all data have been sent and no error has occured |
| 179 | 180 | ||
| 180 | return(retval); |
181 | return(retval); |
| 181 | } |
182 | } |
| 182 | 183 | ||
| 183 | // a data block can be subsequently read after setting the start address once |
184 | // a data block can be subsequently read after setting the start address once |
| 184 | EEPROM_Result_t EEPROM_ReadBlock(u16 Address, u8 *pData, u16 DataLen) |
185 | EEPROM_Result_t EEPROM_ReadBlock(u16 Address, u8 *pData, u16 DataLen) |
| 185 | { |
186 | { |
| 186 | EEPROM_Result_t retval = EEPROM_ERROR_UNKNOWN; |
187 | EEPROM_Result_t retval = EEPROM_ERROR_UNKNOWN; |
| 187 | u16 AdrOffset = 0; |
188 | u16 AdrOffset = 0; |
| 188 | u16 RxLen; |
189 | u16 RxLen; |
| 189 | 190 | ||
| 190 | while(DataLen > 0) |
191 | while(DataLen > 0) |
| 191 | { |
192 | { |
| 192 | if(DataLen > I2C_BUFFER_LEN) RxLen = I2C_BUFFER_LEN; |
193 | if(DataLen > I2C_BUFFER_LEN) RxLen = I2C_BUFFER_LEN; |
| 193 | else RxLen = DataLen; |
194 | else RxLen = DataLen; |
| 194 | 195 | ||
| 195 | retval = EEPROM_Transfer(EEPROM_READ, Address+AdrOffset, &(pData[AdrOffset]), RxLen); |
196 | retval = EEPROM_Transfer(EEPROM_READ, Address+AdrOffset, &(pData[AdrOffset]), RxLen); |
| 196 | if(retval != EEPROM_SUCCESS) break; |
197 | if(retval != EEPROM_SUCCESS) break; |
| 197 | AdrOffset += RxLen; |
198 | AdrOffset += RxLen; |
| 198 | DataLen -= RxLen; |
199 | DataLen -= RxLen; |
| 199 | } |
200 | } |
| 200 | return(retval); |
201 | return(retval); |
| 201 | } |
202 | } |
| 202 | 203 | ||