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diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/I2S/Interrupt/readme.txt b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/I2S/Interrupt/readme.txt new file mode 100644 index 0000000..a913145 --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/I2S/Interrupt/readme.txt @@ -0,0 +1,117 @@ +/** + @page I2S_Interrupt I2S Interrupt example + + @verbatim + ******************** (C) COPYRIGHT 2011 STMicroelectronics ******************* + * @file I2S/Interrupt/readme.txt + * @author MCD Application Team + * @version V3.5.0 + * @date 08-April-2011 + * @brief Description of the I2S Interrupt example. + ****************************************************************************** + * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS + * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE + * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY + * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING + * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE + * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. + ****************************************************************************** + @endverbatim + +@par Example Description + +This example provides a description of how to set a communication between two +SPIs in I2S mode using interrupts and performing a transfer from Master to Slave. + +In the first step, I2S3 is configured as master transmitter and I2S2 as slave +reliever and both are in Philips standard configuration with 16bit extended to +32 bit data packet and 48KHz audio frequency. + +The I2S3 transmit interrupt and the I2S2 receive interrupt are both enabled. And +in these interrupts subroutines, the I2S3_Buffer_Tx is transmitted and the received +values are loaded in the I2S2_Buffer_Rx buffer. Only the significant 16 MSBs are +sent and received, while the 32 packet remaining 16 LSBs are filled with 0 values +and don't generate any interrupt. + +Once the transfer is completed a comparison is done and TransferStatus1 gives the +data transfer status where it is PASSED if transmitted and received data are the +same otherwise it is FAILED. + +In the second step both peripherals are configured in I2S Philips standard 24 bits +data length in 32 bits packets and 16KHz audio frequency. The interrupts are +enabled and the transfer is performed from the I2S3 master to the I2S2 slave. +The 24 bits are transmitted then the 8 remaining LSBs are filled automatically +with 0 values. + +Once the transfer is completed a comparison is done (on the 24 MSBs only, the 8 +LSBs are replaced by 0) and TransferStatus2 gives the data transfer status where +it is PASSED if transmitted and received data are the same otherwise it is FAILED. + +@par Directory contents + + - I2S/Interrupt/stm32f10x_conf.h Library Configuration file + - I2S/Interrupt/stm32f10x_it.c Interrupt handlers + - I2S/Interrupt/stm32f10x_it.h Header for stm32f10x_it.c + - I2S/Interrupt/main.c Main program + - I2S/Interrupt/system_stm32f10x.c STM32F10x system source file + +@par Hardware and Software environment + + - This example runs on STM32F10x High-Density, XL-Density and Connectivity Line + Devices. + + - This example has been tested with STMicroelectronics STM3210E-EVAL (High-Density + and XL-Density) and STM3210C-EVAL (Connectivity Line) evaluation boards + and can be easily tailored to any other supported device and development board. + + - STM3210C-EVAL Set-up + - Connect I2S2 WS (PB.12) pin to I2S3 WS (PA.04) pin + - Connect I2S2 CK (PB.13) pin to I2S3 CK (PC.10) pin + - Connect I2S2 SD (PB.15) pin to I2S3 SD (PC.12) pin + + - STM3210E-EVAL Set-up + - Connect I2S2 WS (PB.12) pin to I2S3 WS (PA.15) pin + - Connect I2S2 CK (PB.13) pin to I2S3 CK (PB.03) pin + - Connect I2S2 SD (PB.15) pin to I2S3 SD (PB.05) pin + +Since some SPI3/I2S3 pins are shared with JTAG pins (SPI3_NSS/I2S3_WS with JTDI +and SPI3_SCK/I2S3_CK with JTDO), they are not controlled by the I/O controller +and are reserved for JTAG usage (after each Reset). +For this purpose prior to configure the SPI3/I2S3 pins: +- For STM32F10x High-Density devices, the user has to disable the JTAG and use + the SWD interface (when debugging the application), or disable both JTAG/SWD + interfaces (for standalone application). +- For STM32F10x Connectivity Line devices, the user can use the solution above + (SWD or disable both JTAG and SWD), or it is possible to remap the SPI3 pins + on {PC10, PC11, PC12, PA4} GPIO pins in order to avoid the conflict with JTAG + pins (and it is possible in this case to use JTAG interface). This remap is + used for STM3210C-EVAL evaluation boards in this example. + +@par How to use it ? + +In order to make the program work, you must do the following : + - Copy all source files from this example folder to the template folder under + Project\STM32F10x_StdPeriph_Template + - Open your preferred toolchain + - Rebuild all files and load your image into target memory + - Run the example + +@note + - Low-density Value line devices are STM32F100xx microcontrollers where the + Flash memory density ranges between 16 and 32 Kbytes. + - Low-density devices are STM32F101xx, STM32F102xx and STM32F103xx + microcontrollers where the Flash memory density ranges between 16 and 32 Kbytes. + - Medium-density Value line devices are STM32F100xx microcontrollers where + the Flash memory density ranges between 64 and 128 Kbytes. + - Medium-density devices are STM32F101xx, STM32F102xx and STM32F103xx + microcontrollers where the Flash memory density ranges between 64 and 128 Kbytes. + - High-density Value line devices are STM32F100xx microcontrollers where + the Flash memory density ranges between 256 and 512 Kbytes. + - High-density devices are STM32F101xx and STM32F103xx microcontrollers where + the Flash memory density ranges between 256 and 512 Kbytes. + - XL-density devices are STM32F101xx and STM32F103xx microcontrollers where + the Flash memory density ranges between 512 and 1024 Kbytes. + - Connectivity line devices are STM32F105xx and STM32F107xx microcontrollers. + + * <h3><center>© COPYRIGHT 2011 STMicroelectronics</center></h3> + */ |