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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 |
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 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 this software (or part of it) to systems (other than 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 "91x_lib.h" |
57 | #include "91x_lib.h" |
58 | 58 | ||
59 | //________________________________________________________________________________________________________________________________________ |
59 | //________________________________________________________________________________________________________________________________________ |
60 | // Module name: ssc.c |
60 | // Module name: ssc.c |
61 | // Compiler used: avr-gcc 3.4.5 |
61 | // Compiler used: avr-gcc 3.4.5 |
62 | // Last Modifikation: 24.07.2007 |
62 | // Last Modifikation: 24.07.2007 |
63 | // Version: 1.02 |
63 | // Version: 1.02 |
64 | // Authors: Stephan Busker |
64 | // Authors: Stephan Busker |
65 | // Description: Source files for access to the synchrnous serial channel. |
65 | // Description: Source files for access to the synchrnous serial channel. |
66 | // Copyright (C) 2007 Stephan Busker |
66 | // Copyright (C) 2007 Stephan Busker |
67 | //........................................................................................................................................ |
67 | //........................................................................................................................................ |
68 | // ext. Functions: extern void SSC_Init(void); |
68 | // ext. Functions: extern void SSC_Init(void); |
69 | // extern u8 SSC_GetChar (void); |
69 | // extern u8 SSC_GetChar (void); |
70 | // extern void SSC_PutChar (u8 Byte); |
70 | // extern void SSC_PutChar (u8 Byte); |
71 | // extern void SSC_Disable(void); |
71 | // extern void SSC_Disable(void); |
72 | // extern void SSC_Enable(void); |
72 | // extern void SSC_Enable(void); |
73 | // extern void SSC_ClearRxFifo(); |
73 | // extern void SSC_ClearRxFifo(); |
74 | //........................................................................................................................................ |
74 | //........................................................................................................................................ |
75 | // URL: www.Mikro-Control.de |
75 | // URL: www.Mikro-Control.de |
76 | // mailto: stephan.busker@mikro-control.de |
76 | // mailto: stephan.busker@mikro-control.de |
77 | //________________________________________________________________________________________________________________________________________ |
77 | //________________________________________________________________________________________________________________________________________ |
78 | 78 | ||
79 | 79 | ||
80 | 80 | ||
81 | //________________________________________________________________________________________________________________________________________ |
81 | //________________________________________________________________________________________________________________________________________ |
82 | // Function: SSC_Enable(void); |
82 | // Function: SSC_Enable(void); |
83 | // |
83 | // |
84 | // Description: This function enables chipselect of the sdcard (active low) |
84 | // Description: This function enables chipselect of the sdcard (active low) |
85 | // |
85 | // |
86 | // |
86 | // |
87 | // Returnvalue: none |
87 | // Returnvalue: none |
88 | //________________________________________________________________________________________________________________________________________ |
88 | //________________________________________________________________________________________________________________________________________ |
89 | 89 | ||
90 | void SSC_Enable(void) |
90 | void SSC_Enable(void) |
91 | { |
91 | { |
92 | // enable chipselect of the sd-card (P5.4 -> SD-CS, active low). |
92 | // enable chipselect of the sd-card (P5.4 -> SD-CS, active low). |
93 | GPIO_WriteBit(GPIO5, GPIO_Pin_4 , Bit_RESET); |
93 | GPIO_WriteBit(GPIO5, GPIO_Pin_4 , Bit_RESET); |
94 | } |
94 | } |
95 | 95 | ||
96 | //________________________________________________________________________________________________________________________________________ |
96 | //________________________________________________________________________________________________________________________________________ |
97 | // Function: SSC_Disable(void); |
97 | // Function: SSC_Disable(void); |
98 | // |
98 | // |
99 | // Description: This function disables chipselect of the sdcard (active low) |
99 | // Description: This function disables chipselect of the sdcard (active low) |
100 | // |
100 | // |
101 | // |
101 | // |
102 | // Returnvalue: none |
102 | // Returnvalue: none |
103 | //________________________________________________________________________________________________________________________________________ |
103 | //________________________________________________________________________________________________________________________________________ |
104 | 104 | ||
105 | void SSC_Disable(void) |
105 | void SSC_Disable(void) |
106 | { |
106 | { |
107 | // disable chipselect of the sd-card (P5.4 -> SD-CS, active low). |
107 | // disable chipselect of the sd-card (P5.4 -> SD-CS, active low). |
108 | GPIO_WriteBit(GPIO5, GPIO_Pin_4 , Bit_SET); |
108 | GPIO_WriteBit(GPIO5, GPIO_Pin_4 , Bit_SET); |
109 | } |
109 | } |
110 | 110 | ||
111 | 111 | ||
112 | //________________________________________________________________________________________________________________________________________ |
112 | //________________________________________________________________________________________________________________________________________ |
113 | // Function: SSC_Init(void); |
113 | // Function: SSC_Init(void); |
114 | // |
114 | // |
115 | // Description: This function initialises the synchronus serial channel to the sdcard. |
115 | // Description: This function initialises the synchronus serial channel to the sdcard. |
116 | // |
116 | // |
117 | // |
117 | // |
118 | // Returnvalue: none |
118 | // Returnvalue: none |
119 | //________________________________________________________________________________________________________________________________________ |
119 | //________________________________________________________________________________________________________________________________________ |
120 | 120 | ||
121 | void SSC_Init(void) |
121 | void SSC_Init(void) |
122 | { |
122 | { |
123 | GPIO_InitTypeDef GPIO_InitStructure; |
123 | GPIO_InitTypeDef GPIO_InitStructure; |
124 | SSP_InitTypeDef SSP_InitStructure; |
124 | SSP_InitTypeDef SSP_InitStructure; |
125 | WIU_InitTypeDef WIU_InitStructure; |
125 | WIU_InitTypeDef WIU_InitStructure; |
126 | // enable APB clock for SPI1 |
126 | // enable APB clock for SPI1 |
127 | SCU_APBPeriphClockConfig(__SSP1 ,ENABLE); |
127 | SCU_APBPeriphClockConfig(__SSP1 ,ENABLE); |
128 | // configure P5.4 -> SD-CS as an output pin |
128 | // configure P5.4 -> SD-CS as an output pin |
129 | GPIO_StructInit(&GPIO_InitStructure); |
129 | GPIO_StructInit(&GPIO_InitStructure); |
130 | GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput; |
130 | GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput; |
131 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; |
131 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; |
132 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
132 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
133 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
133 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
134 | GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt1; |
134 | GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt1; |
135 | GPIO_Init (GPIO5, &GPIO_InitStructure); |
135 | GPIO_Init (GPIO5, &GPIO_InitStructure); |
136 | // configure P3.4 -> SCK1 and P3.6 -> MOSI1 as an output pin |
136 | // configure P3.4 -> SCK1 and P3.6 -> MOSI1 as an output pin |
137 | GPIO_StructInit(&GPIO_InitStructure); |
137 | GPIO_StructInit(&GPIO_InitStructure); |
138 | GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput; |
138 | GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput; |
139 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_6; |
139 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_6; |
140 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
140 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
141 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Enable; |
141 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Enable; |
142 | GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt2; |
142 | GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt2; |
143 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
143 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
144 | // configure P3.5 <- MISO1 as an input pin |
144 | // configure P3.5 <- MISO1 as an input pin |
145 | GPIO_StructInit(&GPIO_InitStructure); |
145 | GPIO_StructInit(&GPIO_InitStructure); |
146 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
146 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
147 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; |
147 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; |
148 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull; |
148 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull; |
149 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Enable; |
149 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Enable; |
150 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
150 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
151 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
151 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
152 | // configure SPI1 |
152 | // configure SPI1 |
153 | SSP_DeInit(SSP1); |
153 | SSP_DeInit(SSP1); |
154 | SSP_StructInit(&SSP_InitStructure); |
154 | SSP_StructInit(&SSP_InitStructure); |
155 | SSP_InitStructure.SSP_FrameFormat = SSP_FrameFormat_Motorola; |
155 | SSP_InitStructure.SSP_FrameFormat = SSP_FrameFormat_Motorola; |
156 | SSP_InitStructure.SSP_Mode = SSP_Mode_Master; |
156 | SSP_InitStructure.SSP_Mode = SSP_Mode_Master; |
157 | SSP_InitStructure.SSP_CPHA = SSP_CPHA_1Edge; |
157 | SSP_InitStructure.SSP_CPHA = SSP_CPHA_1Edge; |
158 | SSP_InitStructure.SSP_CPOL = SSP_CPOL_Low; |
158 | SSP_InitStructure.SSP_CPOL = SSP_CPOL_Low; |
159 | // Set Baud Rate (Prescaler) |
159 | // Set Baud Rate (Prescaler) |
160 | // bit rate is BRCLK/SSP_ClockPrescaler/(1+SSP_ClockRate)) |
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 |
161 | // With MSCLK = 48MHz/2 = BRCLK we get for the SPICLK = 24Mhz / 8 / (1+5) = 500 kHz |
162 | SSP_InitStructure.SSP_ClockRate = 5; //5 |
162 | SSP_InitStructure.SSP_ClockRate = 5; //5 |
163 | SSP_InitStructure.SSP_ClockPrescaler = 8; |
163 | SSP_InitStructure.SSP_ClockPrescaler = 8; |
164 | SSP_Init(SSP1, &SSP_InitStructure); |
164 | SSP_Init(SSP1, &SSP_InitStructure); |
165 | SSC_Disable(); |
165 | SSC_Disable(); |
166 | SSP_Cmd(SSP1, ENABLE); |
166 | SSP_Cmd(SSP1, ENABLE); |
167 | 167 | ||
168 | // Configure SD_SWITCH at pin GPIO5.3 as an external irq 11 |
168 | // Configure SD_SWITCH at pin GPIO5.3 as an external irq 11 |
169 | 169 | ||
170 | // configure the port |
170 | // configure the port |
171 | SCU_APBPeriphClockConfig(__GPIO5, ENABLE); // Enable the GPIO5 Clock |
171 | SCU_APBPeriphClockConfig(__GPIO5, ENABLE); // Enable the GPIO5 Clock |
172 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
172 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
173 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; |
173 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; |
174 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
174 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
175 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
175 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
176 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
176 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
177 | GPIO_Init(GPIO5, &GPIO_InitStructure); |
177 | GPIO_Init(GPIO5, &GPIO_InitStructure); |
178 | 178 | ||
179 | // configure the EXT11 interrupt line (P5.3) as an IRQ with the lowest priority |
179 | // configure the EXT11 interrupt line (P5.3) as an IRQ with the lowest priority |
180 | SCU_APBPeriphClockConfig(__WIU, ENABLE); |
180 | SCU_APBPeriphClockConfig(__WIU, ENABLE); |
181 | WIU_Cmd(ENABLE ); |
181 | WIU_Cmd(ENABLE ); |
182 | WIU_ClearITPendingBit(WIU_Line11); |
182 | WIU_ClearITPendingBit(WIU_Line11); |
183 | WIU_DeInit(); |
183 | WIU_DeInit(); |
184 | WIU_InitStructure.WIU_TriggerEdge = WIU_FallingEdge; |
184 | WIU_InitStructure.WIU_TriggerEdge = WIU_FallingEdge; |
185 | WIU_InitStructure.WIU_Line = WIU_Line11; |
185 | WIU_InitStructure.WIU_Line = WIU_Line11; |
186 | WIU_Init(&WIU_InitStructure); |
186 | WIU_Init(&WIU_InitStructure); |
187 | // The EXTIT1_IRQHandler() is called every time the SD-Switch is activated (falling edge) |
187 | // The EXTIT1_IRQHandler() is called every time the SD-Switch is activated (falling edge) |
188 | // by inserting an sd-card |
188 | // by inserting an sd-card |
189 | SCU_WakeUpLineConfig(11); |
189 | SCU_WakeUpLineConfig(11); |
190 | VIC_Config(EXTIT1_ITLine, VIC_IRQ, 7); |
190 | VIC_Config(EXTIT1_ITLine, VIC_IRQ, 7); |
191 | VIC_ITCmd(EXTIT1_ITLine, ENABLE); |
191 | VIC_ITCmd(EXTIT1_ITLine, ENABLE); |
192 | } |
192 | } |
193 | 193 | ||
194 | void SSC_Deinit(void) |
194 | void SSC_Deinit(void) |
195 | { |
195 | { |
196 | GPIO_InitTypeDef GPIO_InitStructure; |
196 | GPIO_InitTypeDef GPIO_InitStructure; |
197 | 197 | ||
198 | SSP_Cmd(SSP1, DISABLE); |
198 | SSP_Cmd(SSP1, DISABLE); |
199 | SSP_DeInit(SSP1); |
199 | SSP_DeInit(SSP1); |
200 | 200 | ||
201 | // configure P5.4 -> SD-CS as an input pin |
201 | // configure P5.4 -> SD-CS as an input pin |
202 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
202 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
203 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; |
203 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; |
204 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
204 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
205 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
205 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
206 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
206 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
207 | GPIO_Init (GPIO5, &GPIO_InitStructure); |
207 | GPIO_Init (GPIO5, &GPIO_InitStructure); |
208 | // configure P3.4 -> SCK1 and P3.6 -> MOSI1 as an input pin |
208 | // configure P3.4 -> SCK1 and P3.6 -> MOSI1 as an input pin |
209 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
209 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
210 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_6; |
210 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_6; |
211 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
211 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
212 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
212 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
213 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
213 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
214 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
214 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
215 | // configure P3.5 <- MISO1 as an input pin |
215 | // configure P3.5 <- MISO1 as an input pin |
216 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
216 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
217 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; |
217 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; |
218 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull; |
218 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull; |
219 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
219 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
220 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
220 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
221 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
221 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
222 | 222 | ||
223 | // disable APB clock for SPI1 |
223 | // disable APB clock for SPI1 |
224 | SCU_APBPeriphClockConfig(__SSP1 ,DISABLE); |
224 | SCU_APBPeriphClockConfig(__SSP1 ,DISABLE); |
225 | 225 | ||
226 | // configure the port of the SDC-Switch |
226 | // configure the port of the SDC-Switch |
227 | SCU_APBPeriphClockConfig(__GPIO5, ENABLE); // Enable the GPIO5 Clock |
227 | SCU_APBPeriphClockConfig(__GPIO5, ENABLE); // Enable the GPIO5 Clock |
228 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
228 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
229 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; |
229 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; |
230 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
230 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
231 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
231 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
232 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
232 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
233 | GPIO_Init(GPIO5, &GPIO_InitStructure); |
233 | GPIO_Init(GPIO5, &GPIO_InitStructure); |
234 | } |
234 | } |
235 | 235 | ||
236 | 236 | ||
237 | //________________________________________________________________________________________________________________________________________ |
237 | //________________________________________________________________________________________________________________________________________ |
238 | // Function: SSC_GetChar(void); |
238 | // Function: SSC_GetChar(void); |
239 | // |
239 | // |
240 | // Description: This function reads one byte from the SSC |
240 | // Description: This function reads one byte from the SSC |
241 | // |
241 | // |
242 | // |
242 | // |
243 | // Returnvalue: the byte received. |
243 | // Returnvalue: the byte received. |
244 | //________________________________________________________________________________________________________________________________________ |
244 | //________________________________________________________________________________________________________________________________________ |
245 | 245 | ||
246 | u8 SSC_GetChar (void) |
246 | u8 SSC_GetChar (void) |
247 | { |
247 | { |
248 | u8 Byte = 0; |
248 | u8 Byte = 0; |
249 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoNotFull) != SET); // wait for space in the tx fifo |
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 |
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 |
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 |
252 | Byte = SSP_ReceiveData(SSP1); // read the byte transmitted from the slave |
253 | return (Byte); |
253 | return (Byte); |
254 | } |
254 | } |
255 | 255 | ||
256 | //________________________________________________________________________________________________________________________________________ |
256 | //________________________________________________________________________________________________________________________________________ |
257 | void SSC_ClearRxFifo (void) |
257 | void SSC_ClearRxFifo (void) |
258 | { |
258 | { |
259 | // wait that the tx fifo is empty |
259 | // wait that the tx fifo is empty |
260 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoEmpty) != SET); |
260 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoEmpty) != SET); |
261 | // then empty the rx fifo by reading all the bytes that are available |
261 | // then empty the rx fifo by reading all the bytes that are available |
262 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_RxFifoNotEmpty) == SET) SSP_ReceiveData(SSP1); |
262 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_RxFifoNotEmpty) == SET) SSP_ReceiveData(SSP1); |
263 | } |
263 | } |
264 | //________________________________________________________________________________________________________________________________________ |
264 | //________________________________________________________________________________________________________________________________________ |
265 | // Function: SSC_PutChar(u8 Byte); |
265 | // Function: SSC_PutChar(u8 Byte); |
266 | // |
266 | // |
267 | // Description: This function writes one byte to the SSC |
267 | // Description: This function writes one byte to the SSC |
268 | // |
268 | // |
269 | // |
269 | // |
270 | // Returnvalue: none |
270 | // Returnvalue: none |
271 | //________________________________________________________________________________________________________________________________________ |
271 | //________________________________________________________________________________________________________________________________________ |
272 | 272 | ||
273 | void SSC_PutChar (u8 Byte) |
273 | void SSC_PutChar (u8 Byte) |
274 | { |
274 | { |
275 | // wait for some space in the tx fifo |
275 | // wait for some space in the tx fifo |
276 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoNotFull) != SET); |
276 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoNotFull) != SET); |
277 | // put the byte to send in the tx fifo |
277 | // put the byte to send in the tx fifo |
278 | SSP_SendData(SSP1, Byte); |
278 | SSP_SendData(SSP1, Byte); |
279 | } |
279 | } |
280 | 280 | ||
281 | 281 | ||
282 | 282 | ||
283 | 283 | ||
284 | 284 | ||
285 | 285 | ||
286 | 286 | ||
287 | 287 | ||
288 | 288 |