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diff --git a/src/stm32lib/examples/DMA/SPI_RAM/readme.txt b/src/stm32lib/examples/DMA/SPI_RAM/readme.txt new file mode 100755 index 0000000..93a6478 --- /dev/null +++ b/src/stm32lib/examples/DMA/SPI_RAM/readme.txt @@ -0,0 +1,80 @@ +/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
+* File Name : readme.txt
+* Author : MCD Application Team
+* Version : V2.0.1
+* Date : 06/13/2008
+* Description : Description of the DMA SPI 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.
+*******************************************************************************/
+
+Example description
+===================
+This example provides a description of how to use four DMA channels to transfer a
+data buffer from memory to SPI2 through SPI1 and a second data buffer from memory
+to SPI1 through SPI2 in ful-duplex mode.
+
+The NSS pins are configured by software to set SPI1 as master and SPI2 as slave.
+DMA1 Channel2 and Channel4 are configured to store, respectively, the data
+received by SPI1 into the SPI1_Buffer_Rx and the data received by SPI2 into the
+SPI2_Buffer_Rx.
+DMA1 Channel3 is configured to transfer data from the SPI1_Buffer_Tx to the
+SPI1_DR register for transmission to SPI2. DMA1 Channel5 is configured to transfer
+data from the SPI2_Buffer_Tx to the SPI2_DR register for transmission to SPI1.
+
+As soon as the two SPIs TxDMAEN and RxDMAEN bits are set in the SPI1_CR2 and
+SPI2_CR2 registers, DMA1 Channel3 and Channel5 start transmitting, respectively,
+the SPI1 and SPI2 Tx buffers at the same time. At the same moment, the data received
+on SPI1 and SPI2 are stored by DMA1 Channel2 and Channel4 to the SPI1 and SPI2
+Rx buffers, respectively.
+
+A polling on all Transfer complete flags are done for all used DMA channels to
+check the end of all DMA channels transfers. The last received data on SPI1 and
+SPI2 are the CRC values sent by each SPI to the other. The transmitted and received
+buffers are compared to check that all data have been correctly transferred.
+
+
+Directory contents
+==================
+stm32f10x_conf.h Library Configuration file
+stm32f10x_it.c Interrupt handlers
+stm32f10x_it.h Interrupt handlers header file
+main.c Main program
+
+
+Hardware environment
+====================
+This example runs on STMicroelectronics STM3210B-EVAL and STM3210E-EVAL evaluation
+boards and can be easily tailored to any other hardware.
+
+ - Connect SPI1 SCK pin (PA.05) to SPI2 SCK pin (PB.13)
+ - Connect SPI1 MISO pin (PA.06) to SPI2 MISO pin (PB.14)
+ - Connect SPI1 MOSI pin (PA.07) to SPI2 MOSI pin (PB.15)
+
+Note: in STM3210E-EVAL board, the jumper 14 (USB Disconnect) must be set in
+ position 1<->2 in order to not interfer with SPI2 MISO pin PB14.
+
+
+How to use it
+=============
+In order to make the program work, you must do the following :
+- Create a project and setup all your toolchain's start-up files
+- Compile the directory content files and required Library files :
+ + stm32f10x_lib.c
+ + stm32f10x_dma.c
+ + stm32f10x_rcc.c
+ + stm32f10x_spi.c
+ + stm32f10x_nvic.c
+ + stm32f10x_gpio.c
+ + stm32f10x_flash.c
+
+- Link all compiled files and load your image into target memory
+- Run the example
+
+
+******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE******
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