63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
#ifndef _UART_REG_DEFS_
|
|
#define _UART_REG_DEFS_
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
// Register width
|
|
#define UART_PARAM_REG_WIDTH 32
|
|
|
|
#define UART0_BASE_ADDR (0x50000000)
|
|
#define UART0_REG(offset) (*((volatile uint32_t *)(UART0_BASE_ADDR + offset)))
|
|
|
|
// UART control register
|
|
#define UART_CTRL_REG_OFFSET 0x0
|
|
#define UART_CTRL_REG_RESVAL 0xd90000
|
|
#define UART_CTRL_TX_EN_BIT 0
|
|
#define UART_CTRL_RX_EN_BIT 1
|
|
#define UART_CTRL_TX_FIFO_EMPTY_INT_EN_BIT 2
|
|
#define UART_CTRL_RX_FIFO_NOT_EMPTY_INT_EN_BIT 3
|
|
#define UART_CTRL_TX_FIFO_RST_BIT 4
|
|
#define UART_CTRL_RX_FIFO_RST_BIT 5
|
|
#define UART_CTRL_BAUD_DIV_MASK 0xffff
|
|
#define UART_CTRL_BAUD_DIV_OFFSET 16
|
|
#define UART_CTRL_BAUD_DIV_FIELD \
|
|
((bitfield_field32_t) { .mask = UART_CTRL_BAUD_DIV_MASK, .index = UART_CTRL_BAUD_DIV_OFFSET })
|
|
|
|
// UART status register
|
|
#define UART_STATUS_REG_OFFSET 0x4
|
|
#define UART_STATUS_REG_RESVAL 0x3c
|
|
#define UART_STATUS_TXFULL_BIT 0
|
|
#define UART_STATUS_RXFULL_BIT 1
|
|
#define UART_STATUS_TXEMPTY_BIT 2
|
|
#define UART_STATUS_RXEMPTY_BIT 3
|
|
#define UART_STATUS_TXIDLE_BIT 4
|
|
#define UART_STATUS_RXIDLE_BIT 5
|
|
|
|
// UART TX data register
|
|
#define UART_TXDATA_REG_OFFSET 0x8
|
|
#define UART_TXDATA_REG_RESVAL 0x0
|
|
#define UART_TXDATA_TXDATA_MASK 0xff
|
|
#define UART_TXDATA_TXDATA_OFFSET 0
|
|
#define UART_TXDATA_TXDATA_FIELD \
|
|
((bitfield_field32_t) { .mask = UART_TXDATA_TXDATA_MASK, .index = UART_TXDATA_TXDATA_OFFSET })
|
|
|
|
// UART RX data register
|
|
#define UART_RXDATA_REG_OFFSET 0xc
|
|
#define UART_RXDATA_REG_RESVAL 0x0
|
|
#define UART_RXDATA_RXDATA_MASK 0xff
|
|
#define UART_RXDATA_RXDATA_OFFSET 0
|
|
#define UART_RXDATA_RXDATA_FIELD \
|
|
((bitfield_field32_t) { .mask = UART_RXDATA_RXDATA_MASK, .index = UART_RXDATA_RXDATA_OFFSET })
|
|
|
|
typedef void (*myputc)(uint8_t);
|
|
|
|
void uart0_init(myputc putc);
|
|
uint8_t uart0_getc();
|
|
void uart0_putc(uint8_t c);
|
|
|
|
#ifdef __cplusplus
|
|
} // extern "C"
|
|
#endif
|
|
#endif // _UART_REG_DEFS_
|