31 lines
971 B
C
31 lines
971 B
C
#include "gd32vf103.h"
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#include "usart.h"
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void usart0_init(int baud)
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{
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uint32_t com = USART0;
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/* enable GPIO clock */
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rcu_periph_clock_enable(RCU_GPIOA);
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/* enable USART clock */
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rcu_periph_clock_enable(RCU_USART0);
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/* connect port to USARTx_Tx */
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gpio_init(USART0_GPIO_PORT, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, USART0_GPIO_TX_PIN);
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/* connect port to USARTx_Rx */
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gpio_init(USART0_GPIO_PORT, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, USART0_GPIO_RX_PIN);
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/* USART configure */
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usart_deinit(com);
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usart_baudrate_set(com, baud);
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usart_word_length_set(com, USART_WL_8BIT);
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usart_stop_bit_set(com, USART_STB_1BIT);
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usart_parity_config(com, USART_PM_NONE);
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usart_hardware_flow_rts_config(com, USART_RTS_DISABLE);
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usart_hardware_flow_cts_config(com, USART_CTS_DISABLE);
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usart_receive_config(com, USART_RECEIVE_ENABLE);
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usart_transmit_config(com, USART_TRANSMIT_ENABLE);
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usart_enable(com);
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}
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