Differences

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--- stm32:peripherals:gpio_analog [2016/02/25 08:53] – feur
+++ stm32:peripherals:gpio_analog [2022/12/28 08:18] (current) – [MODER] ruan
@@ Line 4: / Line 4: @@
   * The Schmitt trigger input is inactive.
   * The pull-up and -down resitors are inactive.
-  * Reading [[gpio#registers|IDR]] gets "0".
+  * Reading IDR returns "0".
 \\
-===== Configuration Registers =====
+===== Programming Instructions =====
-==== MODER ====
+==== Enable Peripheral ====
-Mode register
+Make sure the peripheral is enabled:
+  * Enable GPIOx in ''RCC->AHBENR[0]''.
-\\ {{gpio_reg_common.svg}} \\ \\
+==== Setup analog input mode ====
-|< 100% 5em 5em >|
+Configure the MODE register, for every pin that should act as analog input:
-|Pin x|10|Analog input mode|
+  * Write ''0x10'' to the corresponding fields in ''GPIOx->MODE''.
+\\
-===== Data Registers =====
+===== Configuration Registers =====
-There are no data registers available in alternate function mode. \\
+==== GPIOx_MODER - Mode register ====
+\\ {{gpio_reg_common.svg}} \\ \\
+|< 100% 5em 5em >|
+|Pin x|11|Analog input mode|