Go to most recent revision | Details | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
1 | ingob | 1 | /*#######################################################################################*/ |
2 | /* !!! THIS IS NOT FREE SOFTWARE !!! */ |
||
3 | /*#######################################################################################*/ |
||
4 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
5 | // + Copyright (c) 2008 Ingo Busker, Holger Buss |
||
6 | // + Nur für den privaten Gebrauch |
||
7 | // + FOR NON COMMERCIAL USE ONLY |
||
8 | // + www.MikroKopter.com |
||
9 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
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. |
||
12 | // + Sollten direkte oder indirekte kommerzielle Absichten verfolgt werden, ist mit uns (info@mikrokopter.de) Kontakt |
||
13 | // + bzgl. der Nutzungsbedingungen aufzunehmen. |
||
14 | // + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen, |
||
15 | // + Verkauf von Luftbildaufnahmen, usw. |
||
16 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
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 |
||
19 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
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" |
||
22 | // + eindeutig als Ursprung verlinkt werden |
||
23 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
24 | // + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion |
||
25 | // + Benutzung auf eigene Gefahr |
||
26 | // + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden |
||
27 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
28 | // + Die PORTIERUNG der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur |
||
29 | // + mit unserer Zustimmung zulässig |
||
30 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
31 | // + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen |
||
32 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
33 | // + Redistributions of source code (with or without modifications) must retain the above copyright notice, |
||
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 |
||
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 |
||
38 | // + for non-commercial use (directly or indirectly) |
||
39 | // + Commercial use (for excample: selling of MikroKopters, selling of PCBs, assembly, ...) is only permitted |
||
40 | // + with our written permission |
||
41 | // + * If sources or documentations are redistributet on other webpages, out webpage (http://www.MikroKopter.de) must be |
||
42 | // + clearly linked as origin |
||
43 | // + * PORTING this software (or part of it) to systems (other than hardware from www.mikrokopter.de) is NOT allowed |
||
44 | // |
||
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 |
||
47 | // + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
||
48 | // + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
||
49 | // + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
||
50 | // + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
||
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 |
||
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 |
||
55 | // + POSSIBILITY OF SUCH DAMAGE. |
||
56 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
24 | StephanB | 57 | #include "91x_lib.h" |
1 | ingob | 58 | |
59 | //________________________________________________________________________________________________________________________________________ |
||
24 | StephanB | 60 | // Module name: ssc.c |
1 | ingob | 61 | // Compiler used: avr-gcc 3.4.5 |
62 | // Last Modifikation: 24.07.2007 |
||
63 | // Version: 1.02 |
||
64 | // Authors: Stephan Busker |
||
65 | // Description: Source files for access to the synchrnous serial channel. |
||
66 | // Copyright (C) 2007 Stephan Busker |
||
67 | //........................................................................................................................................ |
||
24 | StephanB | 68 | // ext. Functions: extern void SSC_Init(void); |
69 | // extern u8 SSC_GetChar (void); |
||
1 | ingob | 70 | // extern void SSC_PutChar (u8 Byte); |
71 | // extern void SSC_Disable(void); |
||
72 | // extern void SSC_Enable(void); |
||
24 | StephanB | 73 | // extern void SSC_ClearRxFifo(); |
1 | ingob | 74 | //........................................................................................................................................ |
75 | // URL: www.Mikro-Control.de |
||
76 | // mailto: stephan.busker@mikro-control.de |
||
77 | //________________________________________________________________________________________________________________________________________ |
||
78 | |||
79 | |||
80 | |||
24 | StephanB | 81 | //________________________________________________________________________________________________________________________________________ |
82 | // Function: SSC_Enable(void); |
||
83 | // |
||
84 | // Description: This function enables chipselect of the sdcard (active low) |
||
85 | // |
||
86 | // |
||
87 | // Returnvalue: none |
||
88 | //________________________________________________________________________________________________________________________________________ |
||
1 | ingob | 89 | |
24 | StephanB | 90 | void SSC_Enable(void) |
91 | { |
||
92 | // enable chipselect of the sd-card (P5.4 -> SD-CS, active low). |
||
93 | GPIO_WriteBit(GPIO5, GPIO_Pin_4 , Bit_RESET); |
||
94 | } |
||
95 | |||
1 | ingob | 96 | //________________________________________________________________________________________________________________________________________ |
24 | StephanB | 97 | // Function: SSC_Disable(void); |
1 | ingob | 98 | // |
24 | StephanB | 99 | // Description: This function disables chipselect of the sdcard (active low) |
100 | // |
||
101 | // |
||
102 | // Returnvalue: none |
||
103 | //________________________________________________________________________________________________________________________________________ |
||
104 | |||
105 | void SSC_Disable(void) |
||
106 | { |
||
107 | // disable chipselect of the sd-card (P5.4 -> SD-CS, active low). |
||
108 | GPIO_WriteBit(GPIO5, GPIO_Pin_4 , Bit_SET); |
||
109 | } |
||
110 | |||
111 | |||
112 | //________________________________________________________________________________________________________________________________________ |
||
113 | // Function: SSC_Init(void); |
||
114 | // |
||
1 | ingob | 115 | // Description: This function initialises the synchronus serial channel to the sdcard. |
116 | // |
||
117 | // |
||
118 | // Returnvalue: none |
||
119 | //________________________________________________________________________________________________________________________________________ |
||
120 | |||
121 | void SSC_Init(void) |
||
122 | { |
||
24 | StephanB | 123 | GPIO_InitTypeDef GPIO_InitStructure; |
124 | SSP_InitTypeDef SSP_InitStructure; |
||
125 | WIU_InitTypeDef WIU_InitStructure; |
||
126 | // enable APB clock for SPI1 |
||
127 | SCU_APBPeriphClockConfig(__SSP1 ,ENABLE); |
||
128 | // configure P5.4 -> SD-CS as an output pin |
||
41 | ingob | 129 | GPIO_StructInit(&GPIO_InitStructure); |
24 | StephanB | 130 | GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput; |
131 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; |
||
132 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
||
133 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
||
134 | GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt1; |
||
135 | GPIO_Init (GPIO5, &GPIO_InitStructure); |
||
136 | // configure P3.4 -> SCK1 and P3.6 -> MOSI1 as an output pin |
||
41 | ingob | 137 | GPIO_StructInit(&GPIO_InitStructure); |
24 | StephanB | 138 | GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput; |
139 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_6; |
||
140 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
||
141 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Enable; |
||
142 | GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt2; |
||
143 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
||
144 | // configure P3.5 <- MISO1 as an input pin |
||
41 | ingob | 145 | GPIO_StructInit(&GPIO_InitStructure); |
24 | StephanB | 146 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
147 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; |
||
148 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull; |
||
149 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Enable; |
||
150 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
||
151 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
||
152 | // configure SPI1 |
||
153 | SSP_DeInit(SSP1); |
||
154 | SSP_StructInit(&SSP_InitStructure); |
||
155 | SSP_InitStructure.SSP_FrameFormat = SSP_FrameFormat_Motorola; |
||
156 | SSP_InitStructure.SSP_Mode = SSP_Mode_Master; |
||
157 | SSP_InitStructure.SSP_CPHA = SSP_CPHA_1Edge; |
||
158 | SSP_InitStructure.SSP_CPOL = SSP_CPOL_Low; |
||
159 | // Set Baud Rate (Prescaler) |
||
160 | // bit rate is BRCLK/SSP_ClockPrescaler/(1+SSP_ClockRate)) |
||
161 | // With MSCLK = 48MHz/2 = BRCLK we get for the SPICLK = 24Mhz / 8 / (1+5) = 500 kHz |
||
41 | ingob | 162 | SSP_InitStructure.SSP_ClockRate = 5; //5 |
24 | StephanB | 163 | SSP_InitStructure.SSP_ClockPrescaler = 8; |
164 | SSP_Init(SSP1, &SSP_InitStructure); |
||
165 | SSC_Disable(); |
||
166 | SSP_Cmd(SSP1, ENABLE); |
||
1 | ingob | 167 | |
24 | StephanB | 168 | // Configure SD_SWITCH at pin GPIO5.3 as an external irq 11 |
1 | ingob | 169 | |
24 | StephanB | 170 | // configure the port |
171 | SCU_APBPeriphClockConfig(__GPIO5, ENABLE); // Enable the GPIO5 Clock |
||
172 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
||
173 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; |
||
174 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
||
175 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
||
176 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
||
177 | GPIO_Init(GPIO5, &GPIO_InitStructure); |
||
178 | |||
179 | // configure the EXT11 interrupt line (P5.3) as an IRQ with the lowest priority |
||
180 | SCU_APBPeriphClockConfig(__WIU, ENABLE); |
||
181 | WIU_Cmd(ENABLE ); |
||
182 | WIU_ClearITPendingBit(WIU_Line11); |
||
183 | WIU_DeInit(); |
||
184 | WIU_InitStructure.WIU_TriggerEdge = WIU_FallingEdge; |
||
185 | WIU_InitStructure.WIU_Line = WIU_Line11; |
||
186 | WIU_Init(&WIU_InitStructure); |
||
187 | // The EXTIT1_IRQHandler() is called every time the SD-Switch is activated (falling edge) |
||
188 | // by inserting an sd-card |
||
189 | SCU_WakeUpLineConfig(11); |
||
190 | VIC_Config(EXTIT1_ITLine, VIC_IRQ, 7); |
||
191 | VIC_ITCmd(EXTIT1_ITLine, ENABLE); |
||
192 | } |
||
1 | ingob | 193 | |
24 | StephanB | 194 | void SSC_Deinit(void) |
195 | { |
||
196 | GPIO_InitTypeDef GPIO_InitStructure; |
||
1 | ingob | 197 | |
24 | StephanB | 198 | SSP_Cmd(SSP1, DISABLE); |
199 | SSP_DeInit(SSP1); |
||
1 | ingob | 200 | |
24 | StephanB | 201 | // configure P5.4 -> SD-CS as an input pin |
202 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
||
203 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; |
||
204 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
||
205 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
||
206 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
||
207 | GPIO_Init (GPIO5, &GPIO_InitStructure); |
||
208 | // configure P3.4 -> SCK1 and P3.6 -> MOSI1 as an input pin |
||
209 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
||
210 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_6; |
||
211 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
||
212 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
||
213 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
||
214 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
||
215 | // configure P3.5 <- MISO1 as an input pin |
||
216 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
||
217 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; |
||
218 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull; |
||
219 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
||
220 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
||
221 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
||
222 | |||
223 | // disable APB clock for SPI1 |
||
224 | SCU_APBPeriphClockConfig(__SSP1 ,DISABLE); |
||
225 | |||
226 | // configure the port of the SDC-Switch |
||
227 | SCU_APBPeriphClockConfig(__GPIO5, ENABLE); // Enable the GPIO5 Clock |
||
228 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
||
229 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; |
||
230 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
||
231 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
||
232 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
||
233 | GPIO_Init(GPIO5, &GPIO_InitStructure); |
||
1 | ingob | 234 | } |
235 | |||
236 | |||
237 | //________________________________________________________________________________________________________________________________________ |
||
24 | StephanB | 238 | // Function: SSC_GetChar(void); |
1 | ingob | 239 | // |
240 | // Description: This function reads one byte from the SSC |
||
241 | // |
||
242 | // |
||
243 | // Returnvalue: the byte received. |
||
244 | //________________________________________________________________________________________________________________________________________ |
||
245 | |||
246 | u8 SSC_GetChar (void) |
||
247 | { |
||
248 | u8 Byte = 0; |
||
24 | StephanB | 249 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoNotFull) != SET); // wait for space in the tx fifo |
250 | SSP_SendData(SSP1, 0xFF);// send dymmy byte (0xFF) as master to receive a byte from the slave |
||
251 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoEmpty) != SET); // wait for the byte to be sent |
||
252 | Byte = SSP_ReceiveData(SSP1); // read the byte transmitted from the slave |
||
1 | ingob | 253 | return (Byte); |
254 | } |
||
255 | |||
256 | //________________________________________________________________________________________________________________________________________ |
||
257 | void SSC_ClearRxFifo (void) |
||
258 | { |
||
24 | StephanB | 259 | // wait that the tx fifo is empty |
1 | ingob | 260 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoEmpty) != SET); |
24 | StephanB | 261 | // then empty the rx fifo by reading all the bytes that are available |
1 | ingob | 262 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_RxFifoNotEmpty) == SET) SSP_ReceiveData(SSP1); |
263 | } |
||
264 | //________________________________________________________________________________________________________________________________________ |
||
24 | StephanB | 265 | // Function: SSC_PutChar(u8 Byte); |
1 | ingob | 266 | // |
267 | // Description: This function writes one byte to the SSC |
||
268 | // |
||
269 | // |
||
270 | // Returnvalue: none |
||
271 | //________________________________________________________________________________________________________________________________________ |
||
272 | |||
273 | void SSC_PutChar (u8 Byte) |
||
274 | { |
||
24 | StephanB | 275 | // wait for some space in the tx fifo |
1 | ingob | 276 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoNotFull) != SET); |
24 | StephanB | 277 | // put the byte to send in the tx fifo |
1 | ingob | 278 | SSP_SendData(SSP1, Byte); |
279 | } |
||
280 | |||
281 | |||
282 | |||
283 | |||
284 | |||
285 | |||
286 | |||
287 |