diff options
Diffstat (limited to 'bsp/at91sam9260/drivers/usart.c')
| -rw-r--r-- | bsp/at91sam9260/drivers/usart.c | 372 |
1 files changed, 186 insertions, 186 deletions
diff --git a/bsp/at91sam9260/drivers/usart.c b/bsp/at91sam9260/drivers/usart.c index dee5585f36..2d493a21bb 100644 --- a/bsp/at91sam9260/drivers/usart.c +++ b/bsp/at91sam9260/drivers/usart.c @@ -14,54 +14,54 @@ #include <at91sam926x.h> #include <rtdevice.h> -#define RXRDY 0x01 -#define TXRDY (1 << 1) +#define RXRDY 0x01 +#define TXRDY (1 << 1) typedef struct uartport { - volatile rt_uint32_t CR; - volatile rt_uint32_t MR; - volatile rt_uint32_t IER; - volatile rt_uint32_t IDR; - volatile rt_uint32_t IMR; - volatile rt_uint32_t CSR; - volatile rt_uint32_t RHR; - volatile rt_uint32_t THR; - volatile rt_uint32_t BRGR; - volatile rt_uint32_t RTOR; - volatile rt_uint32_t TTGR; - volatile rt_uint32_t reserved0[5]; - volatile rt_uint32_t FIDI; - volatile rt_uint32_t NER; - volatile rt_uint32_t reserved1; - volatile rt_uint32_t IFR; - volatile rt_uint32_t reserved2[44]; - volatile rt_uint32_t RPR; - volatile rt_uint32_t RCR; - volatile rt_uint32_t TPR; - volatile rt_uint32_t TCR; - volatile rt_uint32_t RNPR; - volatile rt_uint32_t RNCR; - volatile rt_uint32_t TNPR; - volatile rt_uint32_t TNCR; - volatile rt_uint32_t PTCR; - volatile rt_uint32_t PTSR; + volatile rt_uint32_t CR; + volatile rt_uint32_t MR; + volatile rt_uint32_t IER; + volatile rt_uint32_t IDR; + volatile rt_uint32_t IMR; + volatile rt_uint32_t CSR; + volatile rt_uint32_t RHR; + volatile rt_uint32_t THR; + volatile rt_uint32_t BRGR; + volatile rt_uint32_t RTOR; + volatile rt_uint32_t TTGR; + volatile rt_uint32_t reserved0[5]; + volatile rt_uint32_t FIDI; + volatile rt_uint32_t NER; + volatile rt_uint32_t reserved1; + volatile rt_uint32_t IFR; + volatile rt_uint32_t reserved2[44]; + volatile rt_uint32_t RPR; + volatile rt_uint32_t RCR; + volatile rt_uint32_t TPR; + volatile rt_uint32_t TCR; + volatile rt_uint32_t RNPR; + volatile rt_uint32_t RNCR; + volatile rt_uint32_t TNPR; + volatile rt_uint32_t TNCR; + volatile rt_uint32_t PTCR; + volatile rt_uint32_t PTSR; }uartport; #define CIDR FIDI #define EXID NER #define FNR reserved1 -#define DBGU ((struct uartport *)AT91SAM9260_BASE_DBGU) +#define DBGU ((struct uartport *)AT91SAM9260_BASE_DBGU) -#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 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) struct at91_uart { - uartport *port; - int irq; + uartport *port; + int irq; }; @@ -71,18 +71,18 @@ struct at91_uart { */ void rt_at91_usart_handler(int vector, void *param) { - int status; - struct at91_uart *uart; - rt_device_t dev = (rt_device_t)param; - uart = (struct at91_uart *)dev->user_data; - status = uart->port->CSR; - if (!(status & uart->port->IMR)) - { - return; - } - rt_interrupt_enter(); - rt_hw_serial_isr((struct rt_serial_device *)dev, RT_SERIAL_EVENT_RX_IND); - rt_interrupt_leave(); + int status; + struct at91_uart *uart; + rt_device_t dev = (rt_device_t)param; + uart = (struct at91_uart *)dev->user_data; + status = uart->port->CSR; + if (!(status & uart->port->IMR)) + { + return; + } + rt_interrupt_enter(); + rt_hw_serial_isr((struct rt_serial_device *)dev, RT_SERIAL_EVENT_RX_IND); + rt_interrupt_leave(); } /** @@ -91,67 +91,67 @@ void rt_at91_usart_handler(int vector, void *param) static rt_err_t at91_usart_configure(struct rt_serial_device *serial, struct serial_configure *cfg) { - int div; - int mode = 0; - struct at91_uart *uart; + int div; + int mode = 0; + struct at91_uart *uart; - RT_ASSERT(serial != RT_NULL); + RT_ASSERT(serial != RT_NULL); RT_ASSERT(cfg != RT_NULL); - uart = (struct at91_uart *)serial->parent.user_data; + uart = (struct at91_uart *)serial->parent.user_data; - uart->port->CR = AT91_US_RSTTX | AT91_US_RSTRX | - AT91_US_RXDIS | AT91_US_TXDIS; - mode |= AT91_US_USMODE_NORMAL | AT91_US_USCLKS_MCK | - AT91_US_CHMODE_NORMAL; - switch (cfg->data_bits) - { - case DATA_BITS_8: - mode |= AT91_US_CHRL_8; - break; - case DATA_BITS_7: - mode |= AT91_US_CHRL_7; - break; - case DATA_BITS_6: - mode |= AT91_US_CHRL_6; - break; - case DATA_BITS_5: - mode |= AT91_US_CHRL_5; - break; - default: - mode |= AT91_US_CHRL_8; - break; - } + uart->port->CR = AT91_US_RSTTX | AT91_US_RSTRX | + AT91_US_RXDIS | AT91_US_TXDIS; + mode |= AT91_US_USMODE_NORMAL | AT91_US_USCLKS_MCK | + AT91_US_CHMODE_NORMAL; + switch (cfg->data_bits) + { + case DATA_BITS_8: + mode |= AT91_US_CHRL_8; + break; + case DATA_BITS_7: + mode |= AT91_US_CHRL_7; + break; + case DATA_BITS_6: + mode |= AT91_US_CHRL_6; + break; + case DATA_BITS_5: + mode |= AT91_US_CHRL_5; + break; + default: + mode |= AT91_US_CHRL_8; + break; + } - switch (cfg->stop_bits) - { - case STOP_BITS_2: - mode |= AT91_US_NBSTOP_2; - break; - case STOP_BITS_1: - default: - mode |= AT91_US_NBSTOP_1; - break; - } + switch (cfg->stop_bits) + { + case STOP_BITS_2: + mode |= AT91_US_NBSTOP_2; + break; + case STOP_BITS_1: + default: + mode |= AT91_US_NBSTOP_1; + break; + } - switch (cfg->parity) - { - case PARITY_ODD: - mode |= AT91_US_PAR_ODD; - break; - case PARITY_EVEN: - mode |= AT91_US_PAR_EVEN; - break; - case PARITY_NONE: - default: - mode |= AT91_US_PAR_NONE; - break; - } + switch (cfg->parity) + { + case PARITY_ODD: + mode |= AT91_US_PAR_ODD; + break; + case PARITY_EVEN: + mode |= AT91_US_PAR_EVEN; + break; + case PARITY_NONE: + default: + mode |= AT91_US_PAR_NONE; + break; + } - uart->port->MR = mode; - div = (clk_get_rate(clk_get("mck")) / 16 + cfg->baud_rate/2) / cfg->baud_rate; - uart->port->BRGR = div; - uart->port->CR = AT91_US_RXEN | AT91_US_TXEN; - uart->port->IER = 0x01; + uart->port->MR = mode; + div = (clk_get_rate(clk_get("mck")) / 16 + cfg->baud_rate/2) / cfg->baud_rate; + uart->port->BRGR = div; + uart->port->CR = AT91_US_RXEN | AT91_US_TXEN; + uart->port->IER = 0x01; return RT_EOK; } @@ -168,11 +168,11 @@ static rt_err_t at91_usart_control(struct rt_serial_device *serial, { case RT_DEVICE_CTRL_CLR_INT: /* disable rx irq */ - rt_hw_interrupt_mask(uart->irq); + rt_hw_interrupt_mask(uart->irq); break; case RT_DEVICE_CTRL_SET_INT: /* enable rx irq */ - rt_hw_interrupt_umask(uart->irq); + rt_hw_interrupt_umask(uart->irq); break; } @@ -182,10 +182,10 @@ static rt_err_t at91_usart_control(struct rt_serial_device *serial, static int at91_usart_putc(struct rt_serial_device *serial, char c) { rt_uint32_t level; - struct at91_uart *uart = serial->parent.user_data; + struct at91_uart *uart = serial->parent.user_data; while (!(uart->port->CSR & TXRDY)); - uart->port->THR = c; + uart->port->THR = c; return 1; } @@ -193,16 +193,16 @@ static int at91_usart_putc(struct rt_serial_device *serial, char c) static int at91_usart_getc(struct rt_serial_device *serial) { int result; - struct at91_uart *uart = serial->parent.user_data; + struct at91_uart *uart = serial->parent.user_data; if (uart->port->CSR & RXRDY) - { - result = uart->port->RHR & 0xff; - } - else - { - result = -1; - } + { + result = uart->port->RHR & 0xff; + } + else + { + result = -1; + } return result; } @@ -218,8 +218,8 @@ static const struct rt_uart_ops at91_usart_ops = #if defined(RT_USING_DBGU) static struct rt_serial_device serial_dbgu; struct at91_uart dbgu = { - DBGU, - AT91_ID_SYS + DBGU, + AT91_ID_SYS }; #endif @@ -227,82 +227,82 @@ struct at91_uart dbgu = { #if defined(RT_USING_UART0) static struct rt_serial_device serial0; struct at91_uart uart0 = { - UART0, - AT91SAM9260_ID_US0 + UART0, + AT91SAM9260_ID_US0 }; #endif #if defined(RT_USING_UART1) static struct rt_serial_device serial1; struct at91_uart uart1 = { - UART1, - AT91SAM9260_ID_US1 + UART1, + AT91SAM9260_ID_US1 }; #endif #if defined(RT_USING_UART2) static struct rt_serial_device serial2; struct at91_uart uart2 = { - UART2, - AT91SAM9260_ID_US2 + UART2, + AT91SAM9260_ID_US2 }; #endif #if defined(RT_USING_UART3) static struct rt_serial_device serial3; struct at91_uart uart3 = { - UART3, - AT91SAM9260_ID_US3 + UART3, + AT91SAM9260_ID_US3 }; #endif void at91_usart_gpio_init(void) { - rt_uint32_t val; + rt_uint32_t val; #ifdef RT_USING_DBGU - at91_sys_write(AT91_PIOB + PIO_IDR, (1<<14)|(1<<15)); - //at91_sys_write(AT91_PIOB + PIO_PUER, (1<<6)); - at91_sys_write(AT91_PIOB + PIO_PUDR, (1<<14)|(1<<15)); - at91_sys_write(AT91_PIOB + PIO_ASR, (1<<14)|(1<<15)); - at91_sys_write(AT91_PIOB + PIO_PDR, (1<<14)|(1<<15)); - at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS); + at91_sys_write(AT91_PIOB + PIO_IDR, (1<<14)|(1<<15)); + //at91_sys_write(AT91_PIOB + PIO_PUER, (1<<6)); + at91_sys_write(AT91_PIOB + PIO_PUDR, (1<<14)|(1<<15)); + at91_sys_write(AT91_PIOB + PIO_ASR, (1<<14)|(1<<15)); + at91_sys_write(AT91_PIOB + PIO_PDR, (1<<14)|(1<<15)); + at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS); #endif #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)); + 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)); #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)); + 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)); #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)); + 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)); #endif #ifdef RT_USING_UART3 - at91_sys_write(AT91_PMC_PCER, 1<<AT91SAM9260_ID_US3); - at91_sys_write(AT91_PIOB + PIO_IDR, (1<<10)|(1<<11)); - at91_sys_write(AT91_PIOB + PIO_PUER, (1<<10)); - at91_sys_write(AT91_PIOB + PIO_PUDR, (1<<11)); - at91_sys_write(AT91_PIOB + PIO_ASR, (1<<10)|(1<<11)); - at91_sys_write(AT91_PIOB + PIO_PDR, (1<<10)|(1<<11)); + at91_sys_write(AT91_PMC_PCER, 1<<AT91SAM9260_ID_US3); + at91_sys_write(AT91_PIOB + PIO_IDR, (1<<10)|(1<<11)); + at91_sys_write(AT91_PIOB + PIO_PUER, (1<<10)); + at91_sys_write(AT91_PIOB + PIO_PUDR, (1<<11)); + at91_sys_write(AT91_PIOB + PIO_ASR, (1<<10)|(1<<11)); + at91_sys_write(AT91_PIOB + PIO_PDR, (1<<10)|(1<<11)); #endif } @@ -314,17 +314,17 @@ void at91_usart_gpio_init(void) */ int rt_hw_uart_init(void) { - at91_usart_gpio_init(); + at91_usart_gpio_init(); #if defined(RT_USING_DBGU) - serial_dbgu.ops = &at91_usart_ops; - serial_dbgu.config.baud_rate = BAUD_RATE_115200; + serial_dbgu.ops = &at91_usart_ops; + serial_dbgu.config.baud_rate = BAUD_RATE_115200; serial_dbgu.config.bit_order = BIT_ORDER_LSB; serial_dbgu.config.data_bits = DATA_BITS_8; serial_dbgu.config.parity = PARITY_NONE; serial_dbgu.config.stop_bits = STOP_BITS_1; serial_dbgu.config.invert = NRZ_NORMAL; - serial_dbgu.config.bufsz = RT_SERIAL_RB_BUFSZ; + serial_dbgu.config.bufsz = RT_SERIAL_RB_BUFSZ; /* register vcom device */ rt_hw_serial_register(&serial_dbgu, "dbgu", @@ -333,83 +333,83 @@ int rt_hw_uart_init(void) #endif #if defined(RT_USING_UART0) - serial0.ops = &at91_usart_ops; - serial0.config.baud_rate = BAUD_RATE_115200; + serial0.ops = &at91_usart_ops; + serial0.config.baud_rate = BAUD_RATE_115200; serial0.config.bit_order = BIT_ORDER_LSB; serial0.config.data_bits = DATA_BITS_8; serial0.config.parity = PARITY_NONE; serial0.config.stop_bits = STOP_BITS_1; serial0.config.invert = NRZ_NORMAL; - serial0.config.bufsz = RT_SERIAL_RB_BUFSZ; + serial0.config.bufsz = RT_SERIAL_RB_BUFSZ; /* register vcom device */ rt_hw_serial_register(&serial0, "uart0", RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM, &uart0); - rt_hw_interrupt_install(uart0.irq, rt_at91_usart_handler, - (void *)&(serial0.parent), "UART0"); - rt_hw_interrupt_umask(uart0.irq); + rt_hw_interrupt_install(uart0.irq, rt_at91_usart_handler, + (void *)&(serial0.parent), "UART0"); + rt_hw_interrupt_umask(uart0.irq); #endif #if defined(RT_USING_UART1) - serial1.ops = &at91_usart_ops; + serial1.ops = &at91_usart_ops; serial1.int_rx = &uart1_int_rx; - serial1.config.baud_rate = BAUD_RATE_115200; + serial1.config.baud_rate = BAUD_RATE_115200; serial1.config.bit_order = BIT_ORDER_LSB; serial1.config.data_bits = DATA_BITS_8; serial1.config.parity = PARITY_NONE; serial1.config.stop_bits = STOP_BITS_1; serial1.config.invert = NRZ_NORMAL; - serial1.config.bufsz = RT_SERIAL_RB_BUFSZ; + serial1.config.bufsz = RT_SERIAL_RB_BUFSZ; /* register vcom device */ rt_hw_serial_register(&serial1, "uart1", RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX, &uart1); - rt_hw_interrupt_install(uart1.irq, rt_at91_usart_handler, - (void *)&(serial1.parent), "UART1"); - rt_hw_interrupt_umask(uart1.irq); + rt_hw_interrupt_install(uart1.irq, rt_at91_usart_handler, + (void *)&(serial1.parent), "UART1"); + rt_hw_interrupt_umask(uart1.irq); #endif #if defined(RT_USING_UART2) - serial2.ops = &at91_usart_ops; - serial2.config.baud_rate = BAUD_RATE_115200; + serial2.ops = &at91_usart_ops; + serial2.config.baud_rate = BAUD_RATE_115200; serial2.config.bit_order = BIT_ORDER_LSB; serial2.config.data_bits = DATA_BITS_8; serial2.config.parity = PARITY_NONE; serial2.config.stop_bits = STOP_BITS_1; serial2.config.invert = NRZ_NORMAL; - serial2.config.bufsz = RT_SERIAL_RB_BUFSZ; + serial2.config.bufsz = RT_SERIAL_RB_BUFSZ; /* register vcom device */ rt_hw_serial_register(&serial2, "uart2", RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX, &uart2); - rt_hw_interrupt_install(uart2.irq, rt_at91_usart_handler, - (void *)&(serial2.parent), "UART2"); - rt_hw_interrupt_umask(uart2.irq); + rt_hw_interrupt_install(uart2.irq, rt_at91_usart_handler, + (void *)&(serial2.parent), "UART2"); + rt_hw_interrupt_umask(uart2.irq); #endif #if defined(RT_USING_UART3) - serial3.ops = &at91_usart_ops; - serial3.config.baud_rate = BAUD_RATE_115200; + serial3.ops = &at91_usart_ops; + serial3.config.baud_rate = BAUD_RATE_115200; serial3.config.bit_order = BIT_ORDER_LSB; serial3.config.data_bits = DATA_BITS_8; serial3.config.parity = PARITY_NONE; serial3.config.stop_bits = STOP_BITS_1; serial3.config.invert = NRZ_NORMAL; - serial3.config.bufsz = RT_SERIAL_RB_BUFSZ; + serial3.config.bufsz = RT_SERIAL_RB_BUFSZ; /* register vcom device */ rt_hw_serial_register(&serial3, "uart3", RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX, &uart3); - rt_hw_interrupt_install(uart3.irq, rt_at91_usart_handler, - (void *)&(serial3.parent), "UART3"); - rt_hw_interrupt_umask(uart3.irq); + rt_hw_interrupt_install(uart3.irq, rt_at91_usart_handler, + (void *)&(serial3.parent), "UART3"); + rt_hw_interrupt_umask(uart3.irq); #endif - return 0; + return 0; } INIT_BOARD_EXPORT(rt_hw_uart_init); @@ -417,7 +417,7 @@ INIT_BOARD_EXPORT(rt_hw_uart_init); #ifdef RT_USING_DBGU void rt_dbgu_isr(void) { - rt_at91_usart_handler(dbgu.irq, &(serial_dbgu.parent)); + rt_at91_usart_handler(dbgu.irq, &(serial_dbgu.parent)); } #endif |
