ADC.rar_GUI cortex_m3 _STM32F103 A_stm32f103 adc_stm32f103库_st

/******************** (C) COPYRIGHT 2007 STMicroelectronics ******************** * File Name : readme.txt * Author : MCD Application Team * Version : V1.0 * Date : 10/08/2007 * Description : Description of the ADC Example4. ******************************************************************************** * THE PRESENT SOFTWARE 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 SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING * INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. *******************************************************************************/ 本例展示了如何利用2路外部信号来触发ADC对多路模拟信号进行regular转换和injected转换。 运行程序，在EXTI11线路上（对应管脚PE.11）上的上升沿信号，将触发ADC1对ADC信道4上的输入进行regular转化，并通过DMA将结果传送到内存中的ADC_RegularConvertedValueTab表格，在下一个上升沿信号，将触发ADC1对ADC信道14上的输入进行regular转化，结果也会通过DMA传送到同一张表格中。设置DMA模块，将传送量限制为64个数据。 同样的，对于EXTI11线路上（对应管脚PE.15）上的上升沿信号，将触发ADC1对ADC信道10和ADC信道14上的输入进行injected转化，转化完成后产生中断，中断中把转化结果传送到ADC_InjectedConvertedValueTab表格。 对于EKSTM32F板，由于管脚PE.11和PE.15已经被LCD占用，因此，改为利用管脚PD.11和PD.15，分别对应板上小键盘（KEY4）的SEL建和DOWN健。 由于分压器（VR1）连接在通道10（ADC Channel10）上，因此把这个通道上的转化结果显示在LCD上，用来验证。 Example description =================== This example describes how to trigger ADC regular and injected groups channels conversion using two external line event. Discontinuous mode is enabled for regular group channel conversion and configured to convert one regular channel on each external trigger. ADC1 configured to start regular group channel conversion on EXTI11 event. On detection of the first rising on PE.11 pin, the conversion of the first regular channel (ADC channel4) is done and its converted value is transfered by DMA to ADC_RegularConvertedValueTab table. On the following edge detection, the second regular channel (ADC channel14) is automatically converted and its converted value is stored by DMA in the same table. The number of transmitted data by DMA, in this example is limited to 64 data. The procedure is repeated for both regular channels on each EXTI11 event. ADC1 is configured to start injected group channel conversion on EXTI15 event. On detection of the first rising edge on PE.15 pin all selected injected channel, which are two in this example (ADC channel10 and channel11), are converted and an interrupt is generated on JEOC flag rising at the end of all injected channels conversion. Both injected channels converted results are stored in ADC_InjectedConvertedValueTab table inside the interrupt routine. The procedure is repeated for injected channels on each EXTI15 event. The ADC1 clock is set to 14 MHz. 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 ==================== - Connect a known voltage, between 0-3.3V, to ADC Channel14 mapped on pin PC.04 (potentiometer RV1 on STM3210B-EVAL board), ADC Channel4 mapped on pin PA.04, ADC Channel10 mapped on pin PC.00 and ADC Channel11 mapped on pin PC.01. - Connect a push-button to pin PE.11 (EXTI Line11) and Connect a push-button to pin PE.15 (EXTI Line15). 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_adc.c + stm32f10x_dma.c + stm32f10x_exti.c + stm32f10x_gpio.c + stm32f10x_rcc.c + stm32f10x_nvic.c + stm32f10x_flash.c - Link all compiled files and load your image into either RAM or FLASH - Run the example ******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE******