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author Daniel O'Connor <darius@dons.net.au>
date Fri, 13 Mar 2015 11:39:59 +1030
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1 /**
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2 @page SPI_FullDuplex_SoftNSS SPI Full Duplex Software NSS example
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3
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4 @verbatim
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5 ******************** (C) COPYRIGHT 2011 STMicroelectronics *******************
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6 * @file SPI/FullDuplex_SoftNSS/readme.txt
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7 * @author MCD Application Team
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8 * @version V3.5.0
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9 * @date 08-April-2011
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10 * @brief Description of the SPI Full Duplex Software NSS example.
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11 ******************************************************************************
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12 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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13 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
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14 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
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15 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
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16 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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17 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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18 ******************************************************************************
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19 @endverbatim
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20
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21 @par Example Description
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22
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23 This example provides a description of how to set a communication between SPIy and
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24 SPIz in full-duplex mode and performs a transfer from Master to Slave and then
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25 Slave to Master in the same application with software NSS management.
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26 SPIy and SPIz can be SPI1 and SPI2 or SPI3 and SPI2, depending on the STMicroelectronics
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27 EVAL board you are using.
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28
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29 Both SPIs are configured with 8bit data frame and a 9Mbit/s communication speed.
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30 (for Value line devices the speed is set at 6Mbit/s).
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31 In the first phase, the master SPIy starts the SPIy_Buffer_Tx transfer while the
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32 slave SPIz transmit SPIz_Buffer_Tx. Once the transfer is completed a comparison
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33 is done and TransferStatus1 and TransferStatus2 gives the data transfer status for
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34 each data transfer direction where it is PASSED if transmitted and received data
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35 are the same otherwise it is FAILED.
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36
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37 As the NSS pin is managed by software, this permit to SPIy to become slave and SPIz
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38 to become master without hardware modification.
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39 In the second step, the slave SPIy starts the SPIy_Buffer_Tx transfer while the
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40 master SPIz transmit SPIz_Buffer_Tx. Once the transfer is completed a comparison
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41 is done and TransferStatus3 and TransferStatus4 gives the data transfer status for
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42 each data transfer direction where it is PASSED if transmitted and received data
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43 are the same otherwise it is FAILED.
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44
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45
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46 @par Directory contents
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47
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48 - SPI/FullDuplex_SoftNSS/platform_config.h Evaluation board specific configuration file
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49 - SPI/FullDuplex_SoftNSS/stm32f10x_conf.h Library Configuration file
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50 - SPI/FullDuplex_SoftNSS/stm32f10x_it.c Interrupt handlers
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51 - SPI/FullDuplex_SoftNSS/stm32f10x_it.h Interrupt handlers header file
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52 - SPI/FullDuplex_SoftNSS/main.c Main program
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53 - SPI/FullDuplex_SoftNSS/system_stm32f10x.c STM32F10x system source file
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54
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55 @par Hardware and Software environment
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56
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57 - This example runs on STM32F10x Connectivity line, High-Density, High-Density
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58 Value line, Medium-Density, XL-Density, Medium-Density Value line, Low-Density
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59 and Low-Density Value line Devices.
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60
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61 - This example has been tested with STMicroelectronics STM32100E-EVAL (High-Density
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62 Value line), STM32100B-EVAL (Medium-Density Value line), STM3210C-EVAL (Connectivity line),
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63 STM3210E-EVAL (High-Density and XL-Density) and STM3210B-EVAL (Medium-Density)
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64 evaluation boards and can be easily tailored to any other supported device
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65 and development board.
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66 To select the STMicroelectronics evaluation board used to run the example,
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67 uncomment the corresponding line in SPI/FullDuplex_SoftNSS/platform_config.h file.
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68
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69 - STM32100E-EVAL Set-up
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70 - Connect SPI1 SCK pin (PA.05) to SPI2 SCK pin (PB.13)
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71 - Connect SPI1 MISO pin (PA.06) to SPI2 MISO pin (PB.14)
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72 - Connect SPI1 MOSI pin (PA.07) to SPI2 MOSI pin (PB.15)
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73
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74 - STM32100B-EVAL Set-up
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75 - Connect SPI1 SCK pin (PA.05) to SPI2 SCK pin (PB.13)
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76 - Connect SPI1 MISO pin (PA.06) to SPI2 MISO pin (PB.14)
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77 - Connect SPI1 MOSI pin (PA.07) to SPI2 MOSI pin (PB.15)
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78
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79 - STM3210C-EVAL Set-up
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80 - Connect SPI3 SCK pin (PC.10) to SPI2 SCK pin (PB.13)
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81 - Connect SPI3 MISO pin (PC.11) to SPI2 MISO pin (PB.14)
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82 - Connect SPI3 MOSI pin (PC.12) to SPI2 MOSI pin (PB.15)
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83 @note In this case SPI3 pins are remapped by software.
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84
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85 - STM3210E-EVAL Set-up
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86 - Connect SPI1 SCK pin (PA.05) to SPI2 SCK pin (PB.13)
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87 - Connect SPI1 MISO pin (PA.06) to SPI2 MISO pin (PB.14)
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88 - Connect SPI1 MOSI pin (PA.07) to SPI2 MOSI pin (PB.15)
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89 @note The jumper 14 (USB Disconnect) must be set in position 1<->2 in order
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90 to not interfer with SPI2 MISO pin PB14.
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91
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92 - STM3210B-EVAL Set-up
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93 - Connect SPI1 SCK pin (PA.05) to SPI2 SCK pin (PB.13)
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94 - Connect SPI1 MISO pin (PA.06) to SPI2 MISO pin (PB.14)
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95 - Connect SPI1 MOSI pin (PA.07) to SPI2 MOSI pin (PB.15)
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96
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97 @par How to use it ?
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98
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99 In order to make the program work, you must do the following :
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100 - Copy all source files from this example folder to the template folder under
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101 Project\STM32F10x_StdPeriph_Template
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102 - Open your preferred toolchain
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103 - Rebuild all files and load your image into target memory
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104 - Run the example
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105
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106 @note
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107 - Low-density Value line devices are STM32F100xx microcontrollers where the
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108 Flash memory density ranges between 16 and 32 Kbytes.
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109 - Low-density devices are STM32F101xx, STM32F102xx and STM32F103xx
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110 microcontrollers where the Flash memory density ranges between 16 and 32 Kbytes.
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111 - Medium-density Value line devices are STM32F100xx microcontrollers where
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112 the Flash memory density ranges between 64 and 128 Kbytes.
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113 - Medium-density devices are STM32F101xx, STM32F102xx and STM32F103xx
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114 microcontrollers where the Flash memory density ranges between 64 and 128 Kbytes.
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115 - High-density Value line devices are STM32F100xx microcontrollers where
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116 the Flash memory density ranges between 256 and 512 Kbytes.
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117 - High-density devices are STM32F101xx and STM32F103xx microcontrollers where
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118 the Flash memory density ranges between 256 and 512 Kbytes.
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119 - XL-density devices are STM32F101xx and STM32F103xx microcontrollers where
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120 the Flash memory density ranges between 512 and 1024 Kbytes.
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121 - Connectivity line devices are STM32F105xx and STM32F107xx microcontrollers.
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122
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123 * <h3><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h3>
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124 */