diff options
Diffstat (limited to 'code/fe310/eos/uart.c')
| -rw-r--r-- | code/fe310/eos/uart.c | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/code/fe310/eos/uart.c b/code/fe310/eos/uart.c deleted file mode 100644 index e9349a7..0000000 --- a/code/fe310/eos/uart.c +++ /dev/null @@ -1,93 +0,0 @@ -#include <stdlib.h> -#include <stdint.h> -#include <string.h> - -#include "encoding.h" -#include "platform.h" - -#include "eos.h" -#include "interrupt.h" -#include "event.h" - -#include "uart.h" -#include "irq_def.h" - -static eos_uart_handler_t uart_handler[EOS_UART_MAX_ETYPE]; - -static void uart_handle_evt(unsigned char type, unsigned char *buffer, uint16_t len) { - unsigned char idx = (type & ~EOS_EVT_MASK) - 1; - - if ((idx < EOS_UART_MAX_ETYPE) && uart_handler[idx]) { - uart_handler[idx](type); - } else { - eos_evtq_bad_handler(type, buffer, len); - } -} - -static void uart_handle_intr(void) { - if (UART0_REG(UART_REG_IP) & UART_IP_TXWM) { - UART0_REG(UART_REG_IE) &= ~UART_IP_TXWM; - eos_evtq_push_isr(EOS_EVT_UART | EOS_UART_ETYPE_TX, NULL, 0); - } - if (UART0_REG(UART_REG_IP) & UART_IP_RXWM) { - UART0_REG(UART_REG_IE) &= ~UART_IP_RXWM; - eos_evtq_push_isr(EOS_EVT_UART | EOS_UART_ETYPE_RX, NULL, 0); - } -} - -void eos_uart_init(void) { - int i; - - for (i=0; i<EOS_UART_MAX_ETYPE; i++) { - uart_handler[i] = NULL; - } - eos_evtq_set_handler(EOS_EVT_UART, uart_handle_evt); - eos_intr_set(INT_UART0_BASE, IRQ_PRIORITY_UART, uart_handle_intr); -} - -void eos_uart_set_handler(unsigned char type, eos_uart_handler_t handler) { - if (type && (type <= EOS_UART_MAX_ETYPE)) uart_handler[type - 1] = handler; -} - -void eos_uart_txwm_set(uint8_t wm) { - UART0_REG(UART_REG_TXCTRL) &= ~UART_TXWM(0xFFFF); - UART0_REG(UART_REG_TXCTRL) |= UART_TXWM(wm); - UART0_REG(UART_REG_IE) |= UART_IP_TXWM; -} - -void eos_uart_txwm_clear(void) { - UART0_REG(UART_REG_IE) &= ~UART_IP_TXWM; -} - -void eos_uart_rxwm_set(uint8_t wm) { - UART0_REG(UART_REG_RXCTRL) &= ~UART_RXWM(0xFFFF); - UART0_REG(UART_REG_RXCTRL) |= UART_RXWM(wm); - UART0_REG(UART_REG_IE) |= UART_IP_RXWM; -} - -void eos_uart_rxwm_clear(void) { - UART0_REG(UART_REG_IE) &= ~UART_IP_RXWM; -} - -int eos_uart_putc(int c, char b) { - if (b) { - while (UART0_REG(UART_REG_TXFIFO) & 0x80000000); - UART0_REG(UART_REG_TXFIFO) = c & 0xff; - } else { - if (UART0_REG(UART_REG_TXFIFO) & 0x80000000) return EOS_ERR_FULL; - UART0_REG(UART_REG_TXFIFO) = c & 0xff; - } - return EOS_OK; -} - -int eos_uart_getc(char b) { - volatile uint32_t r; - - if (b) { - while ((r = UART0_REG(UART_REG_RXFIFO)) & 0x80000000); - } else { - r = UART0_REG(UART_REG_RXFIFO); - if (r & 0x80000000) return EOS_ERR_EMPTY; - } - return r & 0xff; -}
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