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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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| 6 | // + Nur für den privaten Gebrauch |
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| 7 | // + FOR NON COMMERCIAL USE ONLY |
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| 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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| 28 | // + Die PORTIERUNG der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur |
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| 29 | // + mit unserer Zustimmung zulässig |
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| 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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| 43 | // + * PORTING this software (or part of it) to systems (other than hardware from www.mikrokopter.de) is NOT allowed |
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| 44 | // |
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| 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" |
| 1 | ingob | 58 | |
| 59 | //________________________________________________________________________________________________________________________________________ |
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| 24 | StephanB | 60 | // Module name: ssc.c |
| 1 | ingob | 61 | // Compiler used: avr-gcc 3.4.5 |
| 62 | // Last Modifikation: 24.07.2007 |
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| 63 | // Version: 1.02 |
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| 64 | // Authors: Stephan Busker |
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| 65 | // Description: Source files for access to the synchrnous serial channel. |
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| 66 | // Copyright (C) 2007 Stephan Busker |
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| 67 | //........................................................................................................................................ |
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| 24 | StephanB | 68 | // ext. Functions: extern void SSC_Init(void); |
| 69 | // extern u8 SSC_GetChar (void); |
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| 1 | ingob | 70 | // extern void SSC_PutChar (u8 Byte); |
| 71 | // extern void SSC_Disable(void); |
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| 72 | // extern void SSC_Enable(void); |
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| 24 | StephanB | 73 | // extern void SSC_ClearRxFifo(); |
| 1 | ingob | 74 | //........................................................................................................................................ |
| 75 | // URL: www.Mikro-Control.de |
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| 76 | // mailto: stephan.busker@mikro-control.de |
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| 77 | //________________________________________________________________________________________________________________________________________ |
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| 78 | |||
| 79 | |||
| 80 | |||
| 24 | StephanB | 81 | //________________________________________________________________________________________________________________________________________ |
| 82 | // Function: SSC_Enable(void); |
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| 83 | // |
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| 84 | // Description: This function enables chipselect of the sdcard (active low) |
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| 85 | // |
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| 86 | // |
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| 87 | // Returnvalue: none |
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| 88 | //________________________________________________________________________________________________________________________________________ |
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| 1 | ingob | 89 | |
| 24 | StephanB | 90 | void SSC_Enable(void) |
| 91 | { |
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| 92 | // enable chipselect of the sd-card (P5.4 -> SD-CS, active low). |
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| 93 | GPIO_WriteBit(GPIO5, GPIO_Pin_4 , Bit_RESET); |
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| 94 | } |
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| 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 | // |
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| 101 | // |
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| 102 | // Returnvalue: none |
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| 103 | //________________________________________________________________________________________________________________________________________ |
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| 104 | |||
| 105 | void SSC_Disable(void) |
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| 106 | { |
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| 107 | // disable chipselect of the sd-card (P5.4 -> SD-CS, active low). |
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| 108 | GPIO_WriteBit(GPIO5, GPIO_Pin_4 , Bit_SET); |
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| 109 | } |
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| 110 | |||
| 111 | |||
| 112 | //________________________________________________________________________________________________________________________________________ |
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| 113 | // Function: SSC_Init(void); |
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| 114 | // |
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| 1 | ingob | 115 | // Description: This function initialises the synchronus serial channel to the sdcard. |
| 116 | // |
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| 117 | // |
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| 118 | // Returnvalue: none |
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| 119 | //________________________________________________________________________________________________________________________________________ |
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| 120 | |||
| 121 | void SSC_Init(void) |
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| 122 | { |
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| 24 | StephanB | 123 | GPIO_InitTypeDef GPIO_InitStructure; |
| 124 | SSP_InitTypeDef SSP_InitStructure; |
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| 125 | WIU_InitTypeDef WIU_InitStructure; |
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| 126 | // enable APB clock for SPI1 |
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| 127 | SCU_APBPeriphClockConfig(__SSP1 ,ENABLE); |
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| 128 | // configure P5.4 -> SD-CS as an output pin |
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| 129 | GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput; |
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| 130 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; |
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| 131 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
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| 132 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
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| 133 | GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt1; |
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| 134 | GPIO_Init (GPIO5, &GPIO_InitStructure); |
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| 135 | // configure P3.4 -> SCK1 and P3.6 -> MOSI1 as an output pin |
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| 136 | GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput; |
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| 137 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_6; |
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| 138 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
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| 139 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Enable; |
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| 140 | GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt2; |
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| 141 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
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| 142 | // configure P3.5 <- MISO1 as an input pin |
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| 143 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
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| 144 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; |
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| 145 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull; |
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| 146 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Enable; |
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| 147 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
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| 148 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
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| 149 | // configure SPI1 |
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| 150 | SSP_DeInit(SSP1); |
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| 151 | SSP_StructInit(&SSP_InitStructure); |
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| 152 | SSP_InitStructure.SSP_FrameFormat = SSP_FrameFormat_Motorola; |
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| 153 | SSP_InitStructure.SSP_Mode = SSP_Mode_Master; |
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| 154 | SSP_InitStructure.SSP_CPHA = SSP_CPHA_1Edge; |
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| 155 | SSP_InitStructure.SSP_CPOL = SSP_CPOL_Low; |
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| 156 | // Set Baud Rate (Prescaler) |
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| 157 | // bit rate is BRCLK/SSP_ClockPrescaler/(1+SSP_ClockRate)) |
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| 158 | // With MSCLK = 48MHz/2 = BRCLK we get for the SPICLK = 24Mhz / 8 / (1+5) = 500 kHz |
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| 159 | SSP_InitStructure.SSP_ClockRate = 14; //5 |
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| 160 | SSP_InitStructure.SSP_ClockPrescaler = 8; |
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| 161 | SSP_Init(SSP1, &SSP_InitStructure); |
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| 162 | SSC_Disable(); |
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| 163 | SSP_Cmd(SSP1, ENABLE); |
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| 1 | ingob | 164 | |
| 24 | StephanB | 165 | // Configure SD_SWITCH at pin GPIO5.3 as an external irq 11 |
| 1 | ingob | 166 | |
| 24 | StephanB | 167 | // configure the port |
| 168 | SCU_APBPeriphClockConfig(__GPIO5, ENABLE); // Enable the GPIO5 Clock |
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| 169 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
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| 170 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; |
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| 171 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
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| 172 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
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| 173 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
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| 174 | GPIO_Init(GPIO5, &GPIO_InitStructure); |
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| 175 | |||
| 176 | // configure the EXT11 interrupt line (P5.3) as an IRQ with the lowest priority |
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| 177 | SCU_APBPeriphClockConfig(__WIU, ENABLE); |
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| 178 | WIU_Cmd(ENABLE ); |
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| 179 | WIU_ClearITPendingBit(WIU_Line11); |
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| 180 | WIU_DeInit(); |
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| 181 | WIU_InitStructure.WIU_TriggerEdge = WIU_FallingEdge; |
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| 182 | WIU_InitStructure.WIU_Line = WIU_Line11; |
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| 183 | WIU_Init(&WIU_InitStructure); |
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| 184 | // The EXTIT1_IRQHandler() is called every time the SD-Switch is activated (falling edge) |
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| 185 | // by inserting an sd-card |
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| 186 | SCU_WakeUpLineConfig(11); |
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| 187 | VIC_Config(EXTIT1_ITLine, VIC_IRQ, 7); |
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| 188 | VIC_ITCmd(EXTIT1_ITLine, ENABLE); |
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| 189 | } |
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| 1 | ingob | 190 | |
| 24 | StephanB | 191 | void SSC_Deinit(void) |
| 192 | { |
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| 193 | GPIO_InitTypeDef GPIO_InitStructure; |
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| 1 | ingob | 194 | |
| 24 | StephanB | 195 | SSP_Cmd(SSP1, DISABLE); |
| 196 | SSP_DeInit(SSP1); |
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| 1 | ingob | 197 | |
| 24 | StephanB | 198 | // configure P5.4 -> SD-CS as an input pin |
| 199 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
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| 200 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; |
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| 201 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
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| 202 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
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| 203 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
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| 204 | GPIO_Init (GPIO5, &GPIO_InitStructure); |
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| 205 | // configure P3.4 -> SCK1 and P3.6 -> MOSI1 as an input pin |
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| 206 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
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| 207 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_6; |
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| 208 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
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| 209 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
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| 210 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
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| 211 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
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| 212 | // configure P3.5 <- MISO1 as an input pin |
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| 213 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
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| 214 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; |
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| 215 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull; |
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| 216 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
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| 217 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
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| 218 | GPIO_Init (GPIO3, &GPIO_InitStructure); |
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| 219 | |||
| 220 | // disable APB clock for SPI1 |
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| 221 | SCU_APBPeriphClockConfig(__SSP1 ,DISABLE); |
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| 222 | |||
| 223 | // configure the port of the SDC-Switch |
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| 224 | SCU_APBPeriphClockConfig(__GPIO5, ENABLE); // Enable the GPIO5 Clock |
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| 225 | GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
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| 226 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; |
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| 227 | GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
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| 228 | GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Disable; |
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| 229 | GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
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| 230 | GPIO_Init(GPIO5, &GPIO_InitStructure); |
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| 1 | ingob | 231 | } |
| 232 | |||
| 233 | |||
| 234 | //________________________________________________________________________________________________________________________________________ |
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| 24 | StephanB | 235 | // Function: SSC_GetChar(void); |
| 1 | ingob | 236 | // |
| 237 | // Description: This function reads one byte from the SSC |
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| 238 | // |
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| 239 | // |
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| 240 | // Returnvalue: the byte received. |
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| 241 | //________________________________________________________________________________________________________________________________________ |
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| 242 | |||
| 243 | u8 SSC_GetChar (void) |
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| 244 | { |
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| 245 | u8 Byte = 0; |
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| 24 | StephanB | 246 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoNotFull) != SET); // wait for space in the tx fifo |
| 247 | SSP_SendData(SSP1, 0xFF);// send dymmy byte (0xFF) as master to receive a byte from the slave |
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| 248 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoEmpty) != SET); // wait for the byte to be sent |
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| 249 | Byte = SSP_ReceiveData(SSP1); // read the byte transmitted from the slave |
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| 1 | ingob | 250 | return (Byte); |
| 251 | } |
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| 252 | |||
| 253 | //________________________________________________________________________________________________________________________________________ |
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| 254 | void SSC_ClearRxFifo (void) |
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| 255 | { |
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| 24 | StephanB | 256 | // wait that the tx fifo is empty |
| 1 | ingob | 257 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoEmpty) != SET); |
| 24 | StephanB | 258 | // then empty the rx fifo by reading all the bytes that are available |
| 1 | ingob | 259 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_RxFifoNotEmpty) == SET) SSP_ReceiveData(SSP1); |
| 260 | } |
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| 261 | //________________________________________________________________________________________________________________________________________ |
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| 24 | StephanB | 262 | // Function: SSC_PutChar(u8 Byte); |
| 1 | ingob | 263 | // |
| 264 | // Description: This function writes one byte to the SSC |
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| 265 | // |
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| 266 | // |
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| 267 | // Returnvalue: none |
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| 268 | //________________________________________________________________________________________________________________________________________ |
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| 269 | |||
| 270 | void SSC_PutChar (u8 Byte) |
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| 271 | { |
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| 24 | StephanB | 272 | // wait for some space in the tx fifo |
| 1 | ingob | 273 | while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoNotFull) != SET); |
| 24 | StephanB | 274 | // put the byte to send in the tx fifo |
| 1 | ingob | 275 | SSP_SendData(SSP1, Byte); |
| 276 | } |
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| 277 | |||
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| 284 |