Differences

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--- stm32:peripherals:gpio_alternate [2016/02/25 08:47] – feur
+++ stm32:peripherals:gpio_alternate [2022/12/28 08:20] (current) – ruan
@@ Line 10: / Line 10: @@
 \\ {{gpio_complete.svg}} \\ \\
-===== Configuration Registers =====
+===== Programming Instructions =====
-==== MODER ====
+Depending on the alternate function you have to configure the pins as:
+  * [[gpio_input#programming_instructions|digital input]],
+  * [[gpio_output#programming_instructions|digital output]] or
+  * [[gpio_analog#programming_instructions|analog input]].
+\\
+===== Configuration Registers =====
-Mode register
+==== GPIOx_MODER - Mode register ====
 \\ {{gpio_reg_common.svg}} \\ \\
 |< 100% 5em 5em >|
-|Pinx|01|Output mode (reset state)|
+|Pin x|10|Alternate function mode|
-==== AFRL/H ====
+==== GPIOx_AFRL/H - Alternate function register (low / high) ====
-Alternate function register (low / high)
 \\ {{gpio_reg_afrl.svg}} \\ \\
@@ Line 30: / Line 33: @@
 |< 100% 5em 5em>|
 |Pin x|0000|AF0: RTC, MCO, Tamper, SWJ, Trace|
-|:::|0001|Timer 1, [[timer2_5|Timer 2]]|
+|:::|0001|AF1: Timer 1, [[timer2_5|Timer 2]]|
-|:::|0010|[[timer2_5|Timer 3..5]]|
+|:::|0010|AF2: [[timer2_5|Timer 3..5]]|
-|:::|0011|Timer 8..11|
+|:::|0011|AF3: Timer 8..11|
-|:::|0100|I²C 1..3|
+|:::|0100|AF4: I²C 1..3|
-|:::|0101|SPI 1,2,4..6|
+|:::|0101|AF5: SPI 1..6|
-|:::|0110|SPI 3, SAI 1|
+|:::|0110|AF6: SPI 2/3, SAI 1|
-|:::|0111|USART 1..3, I²S 3 Ext|
+|:::|0111|AF7: SPI 3, USART 1..3|
-|:::|1000|UART 4..8|
+|:::|1000|AF8: USART 6, UART 4/5/7/8|
-|:::|1001|CAN 1..2, Timer 12..14|
+|:::|1001|AF9: CAN 1/2, Timer 12..14, LCD|
-|:::|1010|USB OTG HS/FS|
+|:::|1010|AF10: USB OTG HS/FS|
-|:::|1011|Ethernet|
+|:::|1011|AF11: Ethernet|
-|:::|1100|FMC, USB OTG HS/FS, SDIO|
+|:::|1100|AF12: FMC, SDIO, USB OTG FS|
-|:::|1101|DCMI|
+|:::|1101|AF13: DCMI|
-|:::|1110|LTDC|
+|:::|1110|AF14: LCD|
-|:::|1111|Event Out|
+|:::|1111|AF15: Event Out|
-==== PUPDR ====
+==== GPIOx_PUPDR - GPIO port pull-up / pull-down register ====
-Push-up / pull-down register
 \\ {{gpio_reg_common.svg}} \\ \\
@@ Line 58: / Line 59: @@
 |:::|11|Reserved|
-==== OTYPER ====
+==== GPIOx_OTYPER - Port output type register ====
-Output type register
 \\ {{gpio_reg_otyper.svg}} \\ \\
@@ Line 68: / Line 67: @@
 |:::|1|Output type: open-drain|
-==== OSPEEDR ====
+==== GPIOx_OSPEEDR - Port output speed register ====
-Output speed register
 \\ {{gpio_reg_common.svg}} \\ \\
@@ Line 80: / Line 77: @@
 |:::|11|Speed: 100 MHz|
-===== Data Registers =====
-There are no data registers available in alternate function mode. \\
-===== Legend =====
-\\ {{legende.svg}} \\ \\