49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
#ifndef PANDA_UART_H
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#define PANDA_UART_H
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#define __DIV(_PCLK_, _BAUD_) (((_PCLK_)*25)/(4*(_BAUD_)))
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#define __DIVMANT(_PCLK_, _BAUD_) (__DIV((_PCLK_), (_BAUD_))/100)
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#define __DIVFRAQ(_PCLK_, _BAUD_) (((__DIV((_PCLK_), (_BAUD_)) - (__DIVMANT((_PCLK_), (_BAUD_)) * 100)) * 16 + 50) / 100)
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#define __USART_BRR(_PCLK_, _BAUD_) ((__DIVMANT((_PCLK_), (_BAUD_)) << 4)|(__DIVFRAQ((_PCLK_), (_BAUD_)) & 0x0F))
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typedef struct uart_ring {
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uint8_t w_ptr_tx;
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uint8_t r_ptr_tx;
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uint8_t elems_tx[FIFO_SIZE];
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uint8_t w_ptr_rx;
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uint8_t r_ptr_rx;
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uint8_t elems_rx[FIFO_SIZE];
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USART_TypeDef *uart;
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void (*callback)(struct uart_ring*);
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} uart_ring;
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extern int has_external_debug_serial;
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extern uart_ring debug_ring;
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uart_ring *get_ring_by_number(int a);
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void uart_set_baud(USART_TypeDef *u, int baud);
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void uart_init(USART_TypeDef *u, int baud);
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void putch(const char a);
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int puts(const char *a);
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void puth(unsigned int i);
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void puth2(unsigned int i);
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void hexdump(void *a, int l);
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int getc(uart_ring *q, char *elem);
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int putc(uart_ring *q, char elem);
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int injectc(uart_ring *q, char elem);
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void uart_ring_process(uart_ring *q);
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#endif
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