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[feat] add uart_put_char and uart_get_char function

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This commit is contained in:
zhji 2025-05-04 17:51:23 +08:00
parent 8fb032ebb5
commit 2d399802a2
3 changed files with 50 additions and 0 deletions
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22
driver/inc/reg/uart_reg.h
View File

@ -148,6 +148,28 @@
#define UART_UARTDMACR_TXDMAE (1 << 1U)
#define UART_UARTDMACR_DMAONERR (1 << 2U)
typedef struct {
io_rw_32 dr;
io_rw_32 rsr;
uint32_t _pad0[4];
io_rw_32 fr;
uint32_t _pad1;
io_rw_32 ilpr;
io_rw_32 ibrd;
io_rw_32 fbrd;
io_rw_32 lcr_h;
io_rw_32 cr;
io_rw_32 ifls;
io_rw_32 imsc;
io_rw_32 ris;
io_rw_32 mis;
io_rw_32 icr;
io_rw_32 dmacr;
} uart_hw_t;
#define uart0_hw ((uart_hw_t *const)UART0_BASE)
#define uart1_hw ((uart_hw_t *const)UART1_BASE)
#ifdef __cplusplus
extern "C" {
#endif

2
driver/inc/uart.h
View File

@ -74,6 +74,8 @@ void uart_init(uint8_t uart_id, struct uart_cfg_s *cfg);
void uart_set_baudrate(uint8_t uart_id, uint32_t src_clk, uint32_t baudrate);
uint32_t uart_get_flags(uint8_t uart_id);
void uart_write_block(uint8_t uart_id, uint8_t *data, uint32_t length);
int uart_put_char(uint8_t uart_id, uint8_t c);
int uart_get_char(uint8_t uart_id);
uint32_t uart_int_get_raw_status(uint8_t uart_id);
uint32_t uart_int_get_status(uint8_t uart_id);

26
driver/src/uart.c
View File

@ -132,6 +132,32 @@ void uart_write_block(uint8_t uart_id, uint8_t *data, uint32_t length)
}
}
int uart_put_char(uint8_t uart_id, uint8_t c)
{
uint32_t addr;
if (uart_get_flags(UART_ID_0) & UART_FLAG_TXFF) {
return -1;
}
addr = UART0_BASE + UART_UARTDR_OFFSET + (UART1_BASE - UART0_BASE) * uart_id;
putreg32(c, addr);
return (int)c;
}
int uart_get_char(uint8_t uart_id)
{
uint32_t addr, val;
if (uart_get_flags(UART_ID_0) & UART_FLAG_RXFE) {
return -1;
}
addr = UART0_BASE + UART_UARTDR_OFFSET + (UART1_BASE - UART0_BASE) * uart_id;
val = getreg32(addr);
val &= UART_UARTDR_DATA_MASK;
val >>= UART_UARTDR_DATA_POS;
return (int)val;
}
uint32_t uart_int_get_raw_status(uint8_t uart_id)
{
uint32_t addr, val;