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| 1 | ingob | 1 | /*#######################################################################################*/ |
| 2 | /* !!! THIS IS NOT FREE SOFTWARE !!! */ |
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| 3 | /*#######################################################################################*/ |
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| 4 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 5 | // + Copyright (c) 2008 Ingo Busker, Holger Buss |
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| 171 | ingob | 6 | // + Nur für den privaten Gebrauch / NON-COMMERCIAL USE ONLY |
| 1 | ingob | 7 | // + FOR NON COMMERCIAL USE ONLY |
| 8 | // + www.MikroKopter.com |
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| 9 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 10 | // + Es gilt für das gesamte Projekt (Hardware, Software, Binärfiles, Sourcecode und Dokumentation), |
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| 11 | // + dass eine Nutzung (auch auszugsweise) nur für den privaten (nicht-kommerziellen) Gebrauch zulässig ist. |
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| 12 | // + Sollten direkte oder indirekte kommerzielle Absichten verfolgt werden, ist mit uns (info@mikrokopter.de) Kontakt |
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| 13 | // + bzgl. der Nutzungsbedingungen aufzunehmen. |
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| 14 | // + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen, |
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| 15 | // + Verkauf von Luftbildaufnahmen, usw. |
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| 16 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 17 | // + Werden Teile des Quellcodes (mit oder ohne Modifikation) weiterverwendet oder veröffentlicht, |
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| 18 | // + unterliegen sie auch diesen Nutzungsbedingungen und diese Nutzungsbedingungen incl. Copyright müssen dann beiliegen |
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| 19 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 20 | // + Sollte die Software (auch auszugesweise) oder sonstige Informationen des MikroKopter-Projekts |
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| 21 | // + auf anderen Webseiten oder sonstigen Medien veröffentlicht werden, muss unsere Webseite "http://www.mikrokopter.de" |
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| 22 | // + eindeutig als Ursprung verlinkt werden |
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| 23 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 24 | // + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion |
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| 25 | // + Benutzung auf eigene Gefahr |
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| 26 | // + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden |
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| 27 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 171 | ingob | 28 | // + Die Portierung oder Nutzung der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur |
| 1 | ingob | 29 | // + mit unserer Zustimmung zulässig |
| 30 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 31 | // + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen |
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| 32 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 33 | // + Redistributions of source code (with or without modifications) must retain the above copyright notice, |
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| 34 | // + this list of conditions and the following disclaimer. |
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| 35 | // + * Neither the name of the copyright holders nor the names of contributors may be used to endorse or promote products derived |
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| 36 | // + from this software without specific prior written permission. |
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| 37 | // + * The use of this project (hardware, software, binary files, sources and documentation) is only permitted |
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| 38 | // + for non-commercial use (directly or indirectly) |
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| 39 | // + Commercial use (for excample: selling of MikroKopters, selling of PCBs, assembly, ...) is only permitted |
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| 40 | // + with our written permission |
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| 41 | // + * If sources or documentations are redistributet on other webpages, out webpage (http://www.MikroKopter.de) must be |
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| 42 | // + clearly linked as origin |
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| 171 | ingob | 43 | // + * porting the sources to other systems or using the software on other systems (except hardware from www.mikrokopter.de) is not allowed |
| 1 | ingob | 44 | // |
| 45 | // + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 46 | // + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 47 | // + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 48 | // + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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| 49 | // + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 50 | // + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 51 | // + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 52 | // + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 53 | // + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 54 | // + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 55 | // + POSSIBILITY OF SUCH DAMAGE. |
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| 56 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 24 | StephanB | 57 | #include "91x_lib.h" |
| 136 | killagreg | 58 | #include "config.h" |
| 1 | ingob | 59 | |
| 60 | //________________________________________________________________________________________________________________________________________ |
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| 24 | StephanB | 61 | // Module name: ssc.c |
| 1 | ingob | 62 | // Compiler used: avr-gcc 3.4.5 |
| 63 | // Last Modifikation: 24.07.2007 |
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| 64 | // Version: 1.02 |
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| 65 | // Authors: Stephan Busker |
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| 66 | // Description: Source files for access to the synchrnous serial channel. |
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| 67 | // Copyright (C) 2007 Stephan Busker |
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| 68 | //........................................................................................................................................ |
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| 24 | StephanB | 69 | // ext. Functions: extern void SSC_Init(void); |
| 70 | // extern u8 SSC_GetChar (void); |
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| 1 | ingob | 71 | // extern void SSC_PutChar (u8 Byte); |
| 72 | // extern void SSC_Disable(void); |
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| 73 | // extern void SSC_Enable(void); |
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| 24 | StephanB | 74 | // extern void SSC_ClearRxFifo(); |
| 1 | ingob | 75 | //........................................................................................................................................ |
| 76 | // URL: www.Mikro-Control.de |
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| 77 | // mailto: stephan.busker@mikro-control.de |
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| 78 | //________________________________________________________________________________________________________________________________________ |
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| 79 | |||
| 80 | |||
| 81 | |||
| 24 | StephanB | 82 | //________________________________________________________________________________________________________________________________________ |
| 83 | // Function: SSC_Enable(void); |
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| 84 | // |
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| 85 | // Description: This function enables chipselect of the sdcard (active low) |
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| 86 | // |
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| 87 | // |
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| 88 | // Returnvalue: none |
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| 89 | //________________________________________________________________________________________________________________________________________ |
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| 1 | ingob | 90 | |
| 24 | StephanB | 91 | void SSC_Enable(void) |
| 92 | { |
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| 93 | // enable chipselect of the sd-card (P5.4 -> SD-CS, active low). |
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| 94 | GPIO_WriteBit(GPIO5, GPIO_Pin_4 , Bit_RESET); |
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| 95 | } |
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| 96 | |||
| 1 | ingob | 97 | //________________________________________________________________________________________________________________________________________ |
| 24 | StephanB | 98 | // Function: SSC_Disable(void); |
| 1 | ingob | 99 | // |
| 24 | StephanB | 100 | // Description: This function disables chipselect of the sdcard (active low) |
| 101 | // |
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| 102 | // |
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| 103 | // Returnvalue: none |
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| 104 | //________________________________________________________________________________________________________________________________________ |
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| 105 | |||
| 106 | void SSC_Disable(void) |
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| 107 | { |
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| 108 | // disable chipselect of the sd-card (P5.4 -> SD-CS, active low). |
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| 109 | GPIO_WriteBit(GPIO5, GPIO_Pin_4 , Bit_SET); |
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| 110 | } |
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| 111 | |||
| 112 | |||
| 113 | //________________________________________________________________________________________________________________________________________ |
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| 114 | // Function: SSC_Init(void); |
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| 115 | // |
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| 1 | ingob | 116 | // Description: This function initialises the synchronus serial channel to the sdcard. |
| 117 | // |
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| 118 | // |
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| 119 | // Returnvalue: none |
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| 120 | //________________________________________________________________________________________________________________________________________ |
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| 121 | |||
| 122 | void SSC_Init(void) |
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| 123 | { |
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| 24 | StephanB | 124 | GPIO_InitTypeDef GPIO_InitStructure; |
| 125 | SSP_InitTypeDef SSP_InitStructure; |
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| 126 | WIU_InitTypeDef WIU_InitStructure; |
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| 127 | // enable APB clock for SPI1 |
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| 128 | SCU_APBPeriphClockConfig(__SSP1 ,ENABLE); |
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| 129 | // configure P5.4 -> SD-CS as an output pin |
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| 41 | ingob | 130 | GPIO_StructInit(&GPIO_InitStructure); |
| 24 | StephanB | 131 | GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput; |
| 132 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; |
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| 133 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
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| 196 | killagreg | 134 | GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Disable; |
| 24 | StephanB | 135 | GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt1; |
| 136 | GPIO_Init (GPIO5, &GPIO_InitStructure); |
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| 137 | // configure P3.4 -> SCK1 and P3.6 -> MOSI1 as an output pin |
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| 41 | ingob | 138 | GPIO_StructInit(&GPIO_InitStructure); |
| 24 | StephanB | 139 | GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput; |
| 140 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_6; |
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| 141 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
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| 196 | killagreg | 142 | GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Enable; |
| 24 | StephanB | 143 | GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt2; |
| 144 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
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| 145 | // configure P3.5 <- MISO1 as an input pin |
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| 41 | ingob | 146 | GPIO_StructInit(&GPIO_InitStructure); |
| 24 | StephanB | 147 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
| 148 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; |
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| 149 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull; |
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| 196 | killagreg | 150 | GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Enable; |
| 24 | StephanB | 151 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
| 152 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
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| 153 | // configure SPI1 |
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| 154 | SSP_DeInit(SSP1); |
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| 155 | SSP_StructInit(&SSP_InitStructure); |
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| 156 | SSP_InitStructure.SSP_FrameFormat = SSP_FrameFormat_Motorola; |
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| 157 | SSP_InitStructure.SSP_Mode = SSP_Mode_Master; |
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| 158 | SSP_InitStructure.SSP_CPHA = SSP_CPHA_1Edge; |
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| 159 | SSP_InitStructure.SSP_CPOL = SSP_CPOL_Low; |
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| 160 | // Set Baud Rate (Prescaler) |
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| 161 | // bit rate is BRCLK/SSP_ClockPrescaler/(1+SSP_ClockRate)) |
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| 162 | // With MSCLK = 48MHz/2 = BRCLK we get for the SPICLK = 24Mhz / 8 / (1+5) = 500 kHz |
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| 41 | ingob | 163 | SSP_InitStructure.SSP_ClockRate = 5; //5 |
| 24 | StephanB | 164 | SSP_InitStructure.SSP_ClockPrescaler = 8; |
| 165 | SSP_Init(SSP1, &SSP_InitStructure); |
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| 166 | SSC_Disable(); |
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| 167 | SSP_Cmd(SSP1, ENABLE); |
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| 1 | ingob | 168 | |
| 24 | StephanB | 169 | // Configure SD_SWITCH at pin GPIO5.3 as an external irq 11 |
| 1 | ingob | 170 | |
| 24 | StephanB | 171 | // configure the port |
| 172 | SCU_APBPeriphClockConfig(__GPIO5, ENABLE); // Enable the GPIO5 Clock |
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| 173 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
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| 174 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; |
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| 175 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
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| 196 | killagreg | 176 | GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Disable; |
| 24 | StephanB | 177 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
| 178 | GPIO_Init(GPIO5, &GPIO_InitStructure); |
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| 179 | |||
| 180 | // configure the EXT11 interrupt line (P5.3) as an IRQ with the lowest priority |
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| 181 | SCU_APBPeriphClockConfig(__WIU, ENABLE); |
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| 154 | killagreg | 182 | WIU_Cmd(ENABLE); |
| 24 | StephanB | 183 | WIU_ClearITPendingBit(WIU_Line11); |
| 154 | killagreg | 184 | //WIU_DeInit(); |
| 24 | StephanB | 185 | WIU_InitStructure.WIU_TriggerEdge = WIU_FallingEdge; |
| 186 | WIU_InitStructure.WIU_Line = WIU_Line11; |
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| 187 | WIU_Init(&WIU_InitStructure); |
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| 188 | // The EXTIT1_IRQHandler() is called every time the SD-Switch is activated (falling edge) |
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| 189 | // by inserting an sd-card |
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| 190 | SCU_WakeUpLineConfig(11); |
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| 136 | killagreg | 191 | VIC_Config(EXTIT1_ITLine, VIC_IRQ, PRIORITY_SDSWITCH); |
| 24 | StephanB | 192 | VIC_ITCmd(EXTIT1_ITLine, ENABLE); |
| 193 | } |
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| 1 | ingob | 194 | |
| 24 | StephanB | 195 | void SSC_Deinit(void) |
| 196 | { |
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| 197 | GPIO_InitTypeDef GPIO_InitStructure; |
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| 1 | ingob | 198 | |
| 24 | StephanB | 199 | SSP_Cmd(SSP1, DISABLE); |
| 200 | SSP_DeInit(SSP1); |
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| 1 | ingob | 201 | |
| 24 | StephanB | 202 | // configure P5.4 -> SD-CS as an input pin |
| 203 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
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| 204 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; |
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| 205 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
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| 196 | killagreg | 206 | GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Disable; |
| 24 | StephanB | 207 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
| 208 | GPIO_Init (GPIO5, &GPIO_InitStructure); |
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| 209 | // configure P3.4 -> SCK1 and P3.6 -> MOSI1 as an input pin |
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| 210 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
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| 211 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_6; |
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| 212 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
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| 196 | killagreg | 213 | GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Disable; |
| 24 | StephanB | 214 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
| 215 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
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| 216 | // configure P3.5 <- MISO1 as an input pin |
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| 217 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
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| 218 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; |
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| 219 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull; |
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| 196 | killagreg | 220 | GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Disable; |
| 24 | StephanB | 221 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
| 222 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
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| 223 | |||
| 224 | // disable APB clock for SPI1 |
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| 225 | SCU_APBPeriphClockConfig(__SSP1 ,DISABLE); |
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| 226 | |||
| 227 | // configure the port of the SDC-Switch |
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| 228 | SCU_APBPeriphClockConfig(__GPIO5, ENABLE); // Enable the GPIO5 Clock |
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| 229 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
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| 230 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; |
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| 231 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
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| 196 | killagreg | 232 | GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Disable; |
| 24 | StephanB | 233 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
| 234 | GPIO_Init(GPIO5, &GPIO_InitStructure); |
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| 1 | ingob | 235 | } |
| 236 | |||
| 237 | |||
| 238 | //________________________________________________________________________________________________________________________________________ |
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| 24 | StephanB | 239 | // Function: SSC_GetChar(void); |
| 1 | ingob | 240 | // |
| 241 | // Description: This function reads one byte from the SSC |
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| 242 | // |
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| 243 | // |
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| 244 | // Returnvalue: the byte received. |
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| 245 | //________________________________________________________________________________________________________________________________________ |
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| 246 | |||
| 247 | u8 SSC_GetChar (void) |
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| 248 | { |
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| 249 | u8 Byte = 0; |
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| 24 | StephanB | 250 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoNotFull) != SET); // wait for space in the tx fifo |
| 251 | SSP_SendData(SSP1, 0xFF);// send dymmy byte (0xFF) as master to receive a byte from the slave |
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| 252 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoEmpty) != SET); // wait for the byte to be sent |
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| 253 | Byte = SSP_ReceiveData(SSP1); // read the byte transmitted from the slave |
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| 1 | ingob | 254 | return (Byte); |
| 255 | } |
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| 256 | |||
| 257 | //________________________________________________________________________________________________________________________________________ |
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| 258 | void SSC_ClearRxFifo (void) |
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| 259 | { |
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| 24 | StephanB | 260 | // wait that the tx fifo is empty |
| 1 | ingob | 261 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoEmpty) != SET); |
| 24 | StephanB | 262 | // then empty the rx fifo by reading all the bytes that are available |
| 1 | ingob | 263 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_RxFifoNotEmpty) == SET) SSP_ReceiveData(SSP1); |
| 264 | } |
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| 265 | //________________________________________________________________________________________________________________________________________ |
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| 24 | StephanB | 266 | // Function: SSC_PutChar(u8 Byte); |
| 1 | ingob | 267 | // |
| 268 | // Description: This function writes one byte to the SSC |
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| 269 | // |
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| 270 | // |
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| 271 | // Returnvalue: none |
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| 272 | //________________________________________________________________________________________________________________________________________ |
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| 273 | |||
| 274 | void SSC_PutChar (u8 Byte) |
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| 275 | { |
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| 24 | StephanB | 276 | // wait for some space in the tx fifo |
| 1 | ingob | 277 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoNotFull) != SET); |
| 24 | StephanB | 278 | // put the byte to send in the tx fifo |
| 1 | ingob | 279 | SSP_SendData(SSP1, Byte); |
| 280 | } |
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| 281 | |||
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| 288 |