@ zdrav Да, точно! Пък то понякога трябва и човек(визирам себе си) да погледне и в кода на питащия за да открие проблема, а последния да чете повечко документацията и примерите!
-For alternate function inputs, the port must be configured in Input mode
(floating, pullup or pull-down) and the input pin must be driven externally.
-For alternate function outputs, the port must be configured in Alternate Function Output
mode (Push-Pull or Open-Drain).
-For bidirectional Alternate Functions, the port bit must be configured in Alternate
Function Output mode (Push-Pull or Open-Drain). In this case the input driver is
configured in input floating mode
Нещо от рода на:
 | | |
| Код: /* Configure SPI1 pins: SCK, MISO and MOSI ---------------------------------*/ /* Confugure SCK and MOSI pins as Alternate Function Push Pull */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_7; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOA, &GPIO_InitStructure); /* Confugure MISO pin as Input Floating */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOA, &GPIO_InitStructure); | |
| | |