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/*#######################################################################################*/ |
/* !!! THIS IS NOT FREE SOFTWARE !!! */ |
/*#######################################################################################*/ |
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
// + Copyright (c) 2008 Ingo Busker, Holger Buss |
// + Nur für den privaten Gebrauch |
// + 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 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 this software (or part of it) to systems (other than 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 |
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// + 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" |
|
//________________________________________________________________________________________________________________________________________ |
// 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 |
//________________________________________________________________________________________________________________________________________ |
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//________________________________________________________________________________________________________________________________________ |
// 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_IPConnected = GPIO_IPConnected_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_IPConnected = GPIO_IPConnected_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_IPConnected = GPIO_IPConnected_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_IPConnected = GPIO_IPConnected_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, 7); |
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_IPConnected = GPIO_IPConnected_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_IPConnected = GPIO_IPConnected_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_IPConnected = GPIO_IPConnected_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_IPConnected = GPIO_IPConnected_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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