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| /*#######################################################################################*/ |
| /* !!! THIS IS NOT FREE SOFTWARE !!! */ |
| /*#######################################################################################*/ |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| // + Copyright (c) 2008 Ingo Busker, Holger Buss |
| // + Nur für den privaten Gebrauch / NON-COMMERCIAL USE ONLY |
| // + FOR NON COMMERCIAL USE ONLY |
| // + www.MikroKopter.com |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| // + Es gilt für das gesamte Projekt (Hardware, Software, Binärfiles, Sourcecode und Dokumentation), |
| // + dass eine Nutzung (auch auszugsweise) nur für den privaten (nicht-kommerziellen) Gebrauch zulässig ist. |
| // + Sollten direkte oder indirekte kommerzielle Absichten verfolgt werden, ist mit uns (info@mikrokopter.de) Kontakt |
| // + bzgl. der Nutzungsbedingungen aufzunehmen. |
| // + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen, |
| // + Verkauf von Luftbildaufnahmen, usw. |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| // + Werden Teile des Quellcodes (mit oder ohne Modifikation) weiterverwendet oder veröffentlicht, |
| // + unterliegen sie auch diesen Nutzungsbedingungen und diese Nutzungsbedingungen incl. Copyright müssen dann beiliegen |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| // + Sollte die Software (auch auszugesweise) oder sonstige Informationen des MikroKopter-Projekts |
| // + auf anderen Webseiten oder sonstigen Medien veröffentlicht werden, muss unsere Webseite "http://www.mikrokopter.de" |
| // + eindeutig als Ursprung verlinkt werden |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| // + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion |
| // + Benutzung auf eigene Gefahr |
| // + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| // + Die Portierung oder Nutzung der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur |
| // + mit unserer Zustimmung zulässig |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| // + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| // + Redistributions of source code (with or without modifications) must retain the above copyright notice, |
| // + this list of conditions and the following disclaimer. |
| // + * Neither the name of the copyright holders nor the names of contributors may be used to endorse or promote products derived |
| // + from this software without specific prior written permission. |
| // + * The use of this project (hardware, software, binary files, sources and documentation) is only permitted |
| // + for non-commercial use (directly or indirectly) |
| // + Commercial use (for excample: selling of MikroKopters, selling of PCBs, assembly, ...) is only permitted |
| // + with our written permission |
| // + * If sources or documentations are redistributet on other webpages, out webpage (http://www.MikroKopter.de) must be |
| // + clearly linked as origin |
| // + * porting the sources to other systems or using the software on other systems (except hardware from www.mikrokopter.de) is not allowed |
| // |
| // + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| // + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| // + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| // + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| // + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| // + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| // + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| // + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| // + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| // + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| // + POSSIBILITY OF SUCH DAMAGE. |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| #include "91x_lib.h" |
| #include "config.h" |
| |
| //________________________________________________________________________________________________________________________________________ |
| // Module name: ssc.c |
| // Compiler used: avr-gcc 3.4.5 |
| // Last Modifikation: 24.07.2007 |
| // Version: 1.02 |
| // Authors: Stephan Busker |
| // Description: Source files for access to the synchrnous serial channel. |
| // Copyright (C) 2007 Stephan Busker |
| //........................................................................................................................................ |
| // ext. Functions: extern void SSC_Init(void); |
| // extern u8 SSC_GetChar (void); |
| // extern void SSC_PutChar (u8 Byte); |
| // extern void SSC_Disable(void); |
| // extern void SSC_Enable(void); |
| // extern void SSC_ClearRxFifo(); |
| //........................................................................................................................................ |
| // URL: www.Mikro-Control.de |
| // mailto: stephan.busker@mikro-control.de |
| //________________________________________________________________________________________________________________________________________ |
| |
| |
| |
| //________________________________________________________________________________________________________________________________________ |
| // Function: SSC_Enable(void); |
| // |
| // Description: This function enables chipselect of the sdcard (active low) |
| // |
| // |
| // Returnvalue: none |
| //________________________________________________________________________________________________________________________________________ |
| |
| void SSC_Enable(void) |
| { |
| // enable chipselect of the sd-card (P5.4 -> SD-CS, active low). |
| GPIO_WriteBit(GPIO5, GPIO_Pin_4 , Bit_RESET); |
| } |
| |
| //________________________________________________________________________________________________________________________________________ |
| // Function: SSC_Disable(void); |
| // |
| // Description: This function disables chipselect of the sdcard (active low) |
| // |
| // |
| // Returnvalue: none |
| //________________________________________________________________________________________________________________________________________ |
| |
| void SSC_Disable(void) |
| { |
| // disable chipselect of the sd-card (P5.4 -> SD-CS, active low). |
| GPIO_WriteBit(GPIO5, GPIO_Pin_4 , Bit_SET); |
| } |
| |
| |
| //________________________________________________________________________________________________________________________________________ |
| // Function: SSC_Init(void); |
| // |
| // Description: This function initialises the synchronus serial channel to the sdcard. |
| // |
| // |
| // Returnvalue: none |
| //________________________________________________________________________________________________________________________________________ |
| |
| void SSC_Init(void) |
| { |
| GPIO_InitTypeDef GPIO_InitStructure; |
| SSP_InitTypeDef SSP_InitStructure; |
| WIU_InitTypeDef WIU_InitStructure; |
| // enable APB clock for SPI1 |
| SCU_APBPeriphClockConfig(__SSP1 ,ENABLE); |
| // configure P5.4 -> SD-CS as an output pin |
| GPIO_StructInit(&GPIO_InitStructure); |
| GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput; |
| GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; |
| GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
| GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Disable; |
| GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt1; |
| GPIO_Init (GPIO5, &GPIO_InitStructure); |
| // configure P3.4 -> SCK1 and P3.6 -> MOSI1 as an output pin |
| GPIO_StructInit(&GPIO_InitStructure); |
| GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput; |
| GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_6; |
| GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
| GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Enable; |
| GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt2; |
| GPIO_Init (GPIO3, &GPIO_InitStructure); |
| // configure P3.5 <- MISO1 as an input pin |
| GPIO_StructInit(&GPIO_InitStructure); |
| GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
| GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; |
| GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull; |
| GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Enable; |
| GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
| GPIO_Init (GPIO3, &GPIO_InitStructure); |
| // configure SPI1 |
| SSP_DeInit(SSP1); |
| SSP_StructInit(&SSP_InitStructure); |
| SSP_InitStructure.SSP_FrameFormat = SSP_FrameFormat_Motorola; |
| SSP_InitStructure.SSP_Mode = SSP_Mode_Master; |
| SSP_InitStructure.SSP_CPHA = SSP_CPHA_1Edge; |
| SSP_InitStructure.SSP_CPOL = SSP_CPOL_Low; |
| // Set Baud Rate (Prescaler) |
| // bit rate is BRCLK/SSP_ClockPrescaler/(1+SSP_ClockRate)) |
| // With MSCLK = 48MHz/2 = BRCLK we get for the SPICLK = 24Mhz / 8 / (1+5) = 500 kHz |
| SSP_InitStructure.SSP_ClockRate = 5; //5 |
| SSP_InitStructure.SSP_ClockPrescaler = 8; |
| SSP_Init(SSP1, &SSP_InitStructure); |
| SSC_Disable(); |
| SSP_Cmd(SSP1, ENABLE); |
| |
| // Configure SD_SWITCH at pin GPIO5.3 as an external irq 11 |
| |
| // configure the port |
| SCU_APBPeriphClockConfig(__GPIO5, ENABLE); // Enable the GPIO5 Clock |
| GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
| GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; |
| GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
| GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Disable; |
| GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
| GPIO_Init(GPIO5, &GPIO_InitStructure); |
| |
| // configure the EXT11 interrupt line (P5.3) as an IRQ with the lowest priority |
| SCU_APBPeriphClockConfig(__WIU, ENABLE); |
| WIU_Cmd(ENABLE); |
| WIU_ClearITPendingBit(WIU_Line11); |
| //WIU_DeInit(); |
| WIU_InitStructure.WIU_TriggerEdge = WIU_FallingEdge; |
| WIU_InitStructure.WIU_Line = WIU_Line11; |
| WIU_Init(&WIU_InitStructure); |
| // The EXTIT1_IRQHandler() is called every time the SD-Switch is activated (falling edge) |
| // by inserting an sd-card |
| SCU_WakeUpLineConfig(11); |
| VIC_Config(EXTIT1_ITLine, VIC_IRQ, PRIORITY_SDSWITCH); |
| VIC_ITCmd(EXTIT1_ITLine, ENABLE); |
| } |
| |
| void SSC_Deinit(void) |
| { |
| GPIO_InitTypeDef GPIO_InitStructure; |
| |
| SSP_Cmd(SSP1, DISABLE); |
| SSP_DeInit(SSP1); |
| |
| // configure P5.4 -> SD-CS as an input pin |
| GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
| GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; |
| GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
| GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Disable; |
| GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
| GPIO_Init (GPIO5, &GPIO_InitStructure); |
| // configure P3.4 -> SCK1 and P3.6 -> MOSI1 as an input pin |
| GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
| GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_6; |
| GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
| GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Disable; |
| GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
| GPIO_Init (GPIO3, &GPIO_InitStructure); |
| // configure P3.5 <- MISO1 as an input pin |
| GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
| GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; |
| GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull; |
| GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Disable; |
| GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
| GPIO_Init (GPIO3, &GPIO_InitStructure); |
| |
| // disable APB clock for SPI1 |
| SCU_APBPeriphClockConfig(__SSP1 ,DISABLE); |
| |
| // configure the port of the SDC-Switch |
| SCU_APBPeriphClockConfig(__GPIO5, ENABLE); // Enable the GPIO5 Clock |
| GPIO_InitStructure.GPIO_Direction = GPIO_PinInput; |
| GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; |
| GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ; |
| GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Disable; |
| GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1; |
| GPIO_Init(GPIO5, &GPIO_InitStructure); |
| } |
| |
| |
| //________________________________________________________________________________________________________________________________________ |
| // Function: SSC_GetChar(void); |
| // |
| // Description: This function reads one byte from the SSC |
| // |
| // |
| // Returnvalue: the byte received. |
| //________________________________________________________________________________________________________________________________________ |
| |
| u8 SSC_GetChar (void) |
| { |
| u8 Byte = 0; |
| while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoNotFull) != SET); // wait for space in the tx fifo |
| SSP_SendData(SSP1, 0xFF);// send dymmy byte (0xFF) as master to receive a byte from the slave |
| while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoEmpty) != SET); // wait for the byte to be sent |
| Byte = SSP_ReceiveData(SSP1); // read the byte transmitted from the slave |
| return (Byte); |
| } |
| |
| //________________________________________________________________________________________________________________________________________ |
| void SSC_ClearRxFifo (void) |
| { |
| // wait that the tx fifo is empty |
| while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoEmpty) != SET); |
| // then empty the rx fifo by reading all the bytes that are available |
| while(SSP_GetFlagStatus(SSP1, SSP_FLAG_RxFifoNotEmpty) == SET) SSP_ReceiveData(SSP1); |
| } |
| //________________________________________________________________________________________________________________________________________ |
| // Function: SSC_PutChar(u8 Byte); |
| // |
| // Description: This function writes one byte to the SSC |
| // |
| // |
| // Returnvalue: none |
| //________________________________________________________________________________________________________________________________________ |
| |
| void SSC_PutChar (u8 Byte) |
| { |
| // wait for some space in the tx fifo |
| while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoNotFull) != SET); |
| // put the byte to send in the tx fifo |
| SSP_SendData(SSP1, Byte); |
| } |
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