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) will be used to connect different parts of the schematic, but no connections have been made yet.STM32F4: SPI MOSI
à 74HC595: SER
(Donnée série)STM32F4: SPI SCK
à 74HC595: SRCLK
(Horloge de décalage)STM32F4: GPIO
(dédié) à 74HC595: RCLK
(Horloge de registre)74HC595: Q7'
(sortie de décalage) se connecte à 74HC595 suivant: SER
.C
void sendToShiftRegister(uint8_t *data, size_t len) { HAL_SPI_Transmit(&hspi1, data, len, HAL_MAX_DELAY); // Pulse the RCLK to latch the data to the output HAL_GPIO_WritePin(GPIOB, GPIO_PIN_1, GPIO_PIN_SET); HAL_Delay(1); HAL_GPIO_WritePin(GPIOB, GPIO_PIN_1, GPIO_PIN_RESET); HAL_Delay(1); }
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