From e5f52327ffb208cd5be097ced4081b7ec0090d26 Mon Sep 17 00:00:00 2001 From: "luohui2320@gmail.com" Date: Sun, 3 Jul 2011 15:16:06 +0000 Subject: [PATCH] support DBGU,UART0~UART3 git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1587 bbd45198-f89e-11dd-88c7-29a3b14d5316 --- bsp/at91sam9260/board.c | 192 ++++++++++++++++++++++++++++--------- bsp/at91sam9260/rtconfig.h | 6 ++ bsp/at91sam9260/startup.c | 34 ++++++- 3 files changed, 184 insertions(+), 48 deletions(-) diff --git a/bsp/at91sam9260/board.c b/bsp/at91sam9260/board.c index 98db2f825f..ac587e91ed 100755 --- a/bsp/at91sam9260/board.c +++ b/bsp/at91sam9260/board.c @@ -33,23 +33,60 @@ extern void rt_hw_set_clock(rt_uint8_t sdiv, rt_uint8_t pdiv, rt_uint8_t mdiv); /*set debug serial port*/ //#define USE_UART1 //#define USE_UART3 -#define USE_DBGU +//#define USE_DBGU #define DBGU ((struct uartport *)0xfffff200) +#define UART0 ((struct uartport *)AT91SAM9260_BASE_US0) #define UART1 ((struct uartport *)AT91SAM9260_BASE_US1) +#define UART2 ((struct uartport *)AT91SAM9260_BASE_US2) #define UART3 ((struct uartport *)AT91SAM9260_BASE_US3) +#define UART4 ((struct uartport *)AT91SAM9260_BASE_US4) +#define UART5 ((struct uartport *)AT91SAM9260_BASE_US5) + struct serial_int_rx uart0_int_rx; struct serial_device uart0 = { - //UART0, DBGU, - //UART1, - //UART3, &uart0_int_rx, RT_NULL }; struct rt_device uart0_device; +struct serial_int_rx uart1_int_rx; +struct serial_device uart1 = +{ + UART0, + &uart1_int_rx, + RT_NULL +}; +struct rt_device uart1_device; + +struct serial_int_rx uart2_int_rx; +struct serial_device uart2 = +{ + UART1, + &uart2_int_rx, + RT_NULL +}; +struct rt_device uart2_device; + +struct serial_int_rx uart3_int_rx; +struct serial_device uart3 = +{ + UART2, + &uart3_int_rx, + RT_NULL +}; +struct rt_device uart3_device; + +struct serial_int_rx uart4_int_rx; +struct serial_device uart4 = +{ + UART3, + &uart4_int_rx, + RT_NULL +}; +struct rt_device uart4_device; /** @@ -57,19 +94,72 @@ struct rt_device uart0_device; */ void rt_serial_handler(int vector) { - #ifdef USE_UART1 int status; - status = readl(AT91SAM9260_BASE_US1+AT91_US_CSR); - if (!(status & readl(AT91SAM9260_BASE_US1+AT91_US_IMR))) - { - return; - } - #endif - #ifdef USE_UART3 - at91_sys_read(AT91_USART3+AT91_US_CSR); - #endif - rt_hw_serial_isr(&uart0_device); + switch (vector) + { + #ifdef RT_USING_UART0 + case AT91SAM9260_ID_US0: + status = readl(AT91SAM9260_BASE_US0+AT91_US_CSR); + if (!(status & readl(AT91SAM9260_BASE_US0+AT91_US_IMR))) + { + return; + } + rt_hw_serial_isr(&uart1_device); + break; + #endif + #ifdef RT_USING_UART1 + case AT91SAM9260_ID_US1: + status = readl(AT91SAM9260_BASE_US1+AT91_US_CSR); + if (!(status & readl(AT91SAM9260_BASE_US1+AT91_US_IMR))) + { + return; + } + rt_hw_serial_isr(&uart2_device); + break; + #endif + #ifdef RT_USING_UART2 + case AT91SAM9260_ID_US2: + status = readl(AT91SAM9260_BASE_US2+AT91_US_CSR); + if (!(status & readl(AT91SAM9260_BASE_US2+AT91_US_IMR))) + { + return; + } + rt_hw_serial_isr(&uart3_device); + break; + #endif + #ifdef RT_USING_UART3 + case AT91SAM9260_ID_US3: + status = readl(AT91SAM9260_BASE_US3+AT91_US_CSR); + if (!(status & readl(AT91SAM9260_BASE_US3+AT91_US_IMR))) + { + return; + } + rt_hw_serial_isr(&uart4_device); + break; + #endif + default: break; + } + +} + +void uart_port_init(rt_uint32_t base) +{ + #define BAUDRATE 115200 + rt_uint32_t cd; + + writel(AT91_US_RSTTX | AT91_US_RSTRX | + AT91_US_RXDIS | AT91_US_TXDIS, + base + AT91_US_CR); + writel( AT91_US_USMODE_NORMAL | AT91_US_USCLKS_MCK | + AT91_US_CHRL_8 | AT91_US_PAR_NONE | + AT91_US_NBSTOP_1 | AT91_US_CHMODE_NORMAL, + base + AT91_US_MR); + cd = (clk_get_rate(clk_get("mck")) / 16 + BAUDRATE/2) / BAUDRATE; + writel(cd, base + AT91_US_BRGR); + writel(AT91_US_RXEN | AT91_US_TXEN, base + AT91_US_CR); + + writel(0x1, base + AT91_US_IER); } /** @@ -77,50 +167,58 @@ void rt_serial_handler(int vector) */ void rt_hw_uart_init(void) { - rt_uint32_t cd; - #ifdef USE_UART1 - #define BAUDRATE 115200 - //rt_uint32_t uart_rate; - //at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_PIOB); +#ifdef RT_USING_UART0 + at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_US0); + at91_sys_write(AT91_PIOB + PIO_IDR, (1<<4)|(1<<5)); + at91_sys_write(AT91_PIOB + PIO_PUER, (1<<4)); + at91_sys_write(AT91_PIOB + PIO_PUDR, (1<<5)); + at91_sys_write(AT91_PIOB + PIO_ASR, (1<<4)|(1<<5)); + at91_sys_write(AT91_PIOB + PIO_PDR, (1<<4)|(1<<5)); + uart_port_init(AT91SAM9260_BASE_US0); + /* install interrupt handler */ + rt_hw_interrupt_install(AT91SAM9260_ID_US0, rt_serial_handler, RT_NULL); + rt_hw_interrupt_umask(AT91SAM9260_ID_US0); +#endif +#ifdef RT_USING_UART1 at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_US1); at91_sys_write(AT91_PIOB + PIO_IDR, (1<<6)|(1<<7)); at91_sys_write(AT91_PIOB + PIO_PUER, (1<<6)); at91_sys_write(AT91_PIOB + PIO_PUDR, (1<<7)); at91_sys_write(AT91_PIOB + PIO_ASR, (1<<6)|(1<<7)); at91_sys_write(AT91_PIOB + PIO_PDR, (1<<6)|(1<<7)); - writel(AT91_US_RSTTX | AT91_US_RSTRX | AT91_US_RXDIS | AT91_US_TXDIS, AT91SAM9260_BASE_US1 + AT91_US_CR); - writel( AT91_US_USMODE_NORMAL | AT91_US_USCLKS_MCK | AT91_US_CHRL_8 | AT91_US_PAR_NONE | AT91_US_NBSTOP_1 | AT91_US_CHMODE_NORMAL, AT91SAM9260_BASE_US1 + AT91_US_MR);//0x100108c0 - //at91_sys_write(AT91_USART1 + AT91_US_MR, 0x000008c0);//0x100108c0 - cd = (clk_get_rate(clk_get("mck")) / 16 + BAUDRATE/2) / BAUDRATE; - writel(cd, AT91SAM9260_BASE_US1 + AT91_US_BRGR); - writel(AT91_US_RXEN | AT91_US_TXEN, AT91SAM9260_BASE_US1 + AT91_US_CR); - - writel(0x1, AT91SAM9260_BASE_US1 + AT91_US_IER); + uart_port_init(AT91SAM9260_BASE_US1); /* install interrupt handler */ rt_hw_interrupt_install(AT91SAM9260_ID_US1, rt_serial_handler, RT_NULL); rt_hw_interrupt_umask(AT91SAM9260_ID_US1); - #endif - #ifdef USE_UART3 - #define BAUDRATE 115200 - //rt_uint32_t uart_rate; +#endif +#ifdef RT_USING_UART2 + at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_US2); + at91_sys_write(AT91_PIOB + PIO_IDR, (1<<8)|(1<<9)); + at91_sys_write(AT91_PIOB + PIO_PUER, (1<<8)); + at91_sys_write(AT91_PIOB + PIO_PUDR, (1<<9)); + at91_sys_write(AT91_PIOB + PIO_ASR, (1<<8)|(1<<9)); + at91_sys_write(AT91_PIOB + PIO_PDR, (1<<8)|(1<<9)); + uart_port_init(AT91SAM9260_BASE_US2); + /* install interrupt handler */ + rt_hw_interrupt_install(AT91SAM9260_ID_US2, rt_serial_handler, RT_NULL); + rt_hw_interrupt_umask(AT91SAM9260_ID_US2); +#endif +#ifdef RT_USING_UART3 at91_sys_write(AT91_PMC_PCER, 1<