From d8755ddd93f527594eb0bd97b1b8819c10b9c415 Mon Sep 17 00:00:00 2001 From: Grissiom Date: Thu, 30 May 2013 10:02:26 +0800 Subject: rm48x50: move uart.c to drv_uart.c --- bsp/rm48x50/drivers/drv_uart.c | 210 +++++++++++++++++++++++++++++++++++++++++ bsp/rm48x50/drivers/uart.c | 210 ----------------------------------------- 2 files changed, 210 insertions(+), 210 deletions(-) create mode 100644 bsp/rm48x50/drivers/drv_uart.c delete mode 100644 bsp/rm48x50/drivers/uart.c diff --git a/bsp/rm48x50/drivers/drv_uart.c b/bsp/rm48x50/drivers/drv_uart.c new file mode 100644 index 0000000000..3f0237e648 --- /dev/null +++ b/bsp/rm48x50/drivers/drv_uart.c @@ -0,0 +1,210 @@ +/* + * File : uart.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2013, RT-Thread Develop Team + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://openlab.rt-thread.com/license/LICENSE + * + * Change Logs: + * Date Author Notes + * 2013-05-27 Grissiom port to RM48x50 + */ + +/* welcome, if you open this file, you may want to see uart driver code. + * However, TI call it Serial Communication Interface(SCI) and all the low + * level API is prefixed by "sci". To avoid messive renaming, I want to keep + * with TI and call all the things SCI. You could safely substitude the word + * "sci" with "uart". Enjoy. */ + +#include +#include +#include + +#include + +/* bring from sci.h */ +enum sciIntFlags +{ + SCI_FE_INT = 0x04000000U, /* framing error */ + SCI_OE_INT = 0x02000000U, /* overrun error */ + SCI_PE_INT = 0x01000000U, /* parity error */ + SCI_RX_INT = 0x00000200U, /* receive buffer ready */ + SCI_TX_INT = 0x00000100U, /* transmit buffer ready */ + SCI_WAKE_INT = 0x00000002U, /* wakeup */ + SCI_BREAK_INT = 0x00000001U /* break detect */ +}; + +/* LIN1 High level interrupt. Change this if you set a different channel in + * HALCoGen. */ +#define SCI_INT_VEC 14 + +#define VCLK_HZ 100000000L + +static rt_err_t _configure(struct rt_serial_device *serial, struct serial_configure *cfg) +{ + /** - global control 1 */ + rt_uint32_t gcr1 = (1U << 25U) /* enable transmit */ + | (1U << 24U) /* enable receive */ + | (1U << 5U) /* internal clock (device has no clock pin) */ + | (1U << 1U); /* asynchronous timing mode */ + if (cfg->stop_bits == STOP_BITS_2) + gcr1 |= (1U << 4U); /* number of stop bits */ + else if (cfg->stop_bits != STOP_BITS_1) + return -RT_ERROR; + + if (cfg->parity == PARITY_EVEN) + { + gcr1 |= (1U << 3U) | (1U << 2U); + } + else if (cfg->parity == PARITY_ODD) + { + gcr1 |= (0U << 3U) | (1U << 2U); + } + + /** - bring SCI out of reset */ + scilinREG->GCR0 = 1U; + + /** - Disable all interrupts */ + scilinREG->CLRINT = 0xFFFFFFFFU; + scilinREG->CLRINTLVL = 0xFFFFFFFFU; + + scilinREG->GCR1 = gcr1; + + /** - set baudrate */ + scilinREG->BRS = VCLK_HZ/16/cfg->baud_rate - 1; /* baudrate */ + + /** - transmission length */ + scilinREG->FORMAT = cfg->data_bits - 1; /* length */ + + /** - set SCI pins functional mode */ + scilinREG->FUN = (1U << 2U) /* tx pin */ + | (1U << 1U) /* rx pin */ + | (0U); /* clk pin */ + + /** - set SCI pins default output value */ + scilinREG->DOUT = (0U << 2U) /* tx pin */ + | (0U << 1U) /* rx pin */ + | (0U); /* clk pin */ + + /** - set SCI pins output direction */ + scilinREG->DIR = (0U << 2U) /* tx pin */ + | (0U << 1U) /* rx pin */ + | (0U); /* clk pin */ + + /** - set SCI pins open drain enable */ + scilinREG->ODR = (0U << 2U) /* tx pin */ + | (0U << 1U) /* rx pin */ + | (0U); /* clk pin */ + + /** - set SCI pins pullup/pulldown enable */ + scilinREG->PD = (0U << 2U) /* tx pin */ + | (0U << 1U) /* rx pin */ + | (0U); /* clk pin */ + + /** - set SCI pins pullup/pulldown select */ + scilinREG->PSL = (1U << 2U) /* tx pin */ + | (1U << 1U) /* rx pin */ + | (1U); /* clk pin */ + + /** - set interrupt level */ + scilinREG->SETINTLVL = (0U << 26U) /* Framing error */ + | (0U << 25U) /* Overrun error */ + | (0U << 24U) /* Parity error */ + | (0U << 9U) /* Receive */ + | (0U << 8U) /* Transmit */ + | (0U << 1U) /* Wakeup */ + | (0U); /* Break detect */ + + /** - set interrupt enable */ + scilinREG->SETINT = (0U << 26U) /* Framing error */ + | (0U << 25U) /* Overrun error */ + | (0U << 24U) /* Parity error */ + | (1U << 9U) /* Receive */ + | (0U << 1U) /* Wakeup */ + | (0U); /* Break detect */ + + /** - Finaly start SCILIN */ + scilinREG->GCR1 |= (1U << 7U); + + return RT_EOK; +} + +static rt_err_t _control(struct rt_serial_device *serial, int cmd, void *arg) +{ + sciBASE_t *sci = (sciBASE_t*)serial->parent.user_data; + + switch (cmd) + { + case RT_DEVICE_CTRL_CLR_INT: + /* disable rx irq */ + sci->CLRINT = SCI_RX_INT; + break; + case RT_DEVICE_CTRL_SET_INT: + /* enable rx irq */ + sci->SETINT = SCI_RX_INT; + break; + } + + return RT_EOK; +} + +static int _putc(struct rt_serial_device *serial, char c) +{ + sciBASE_t *sci = (sciBASE_t*)serial->parent.user_data; + while ((sci->FLR & SCI_TX_INT) == 0U) + ; + sci->TD = c; + return 1; +} + +static int _getc(struct rt_serial_device *serial) +{ + sciBASE_t *sci = (sciBASE_t*)serial->parent.user_data; + if (sci->FLR & (1<<9)) + return (sci->RD & 0x000000FFU); + else + return -1; +} + +static const struct rt_uart_ops _sci_ops = +{ + _configure, + _control, + _putc, + _getc, +}; + +static void _irq_wrapper(int vector, void *param) +{ + rt_hw_serial_isr((struct rt_serial_device*)param); +} + +static struct rt_serial_device _sci2_serial; +static struct serial_ringbuffer _sci2_int_rx; + +void rt_hw_uart_init(void) +{ + struct serial_configure config; + + /* fake configuration */ + config.baud_rate = BAUD_RATE_115200; + config.bit_order = BIT_ORDER_LSB; + config.data_bits = DATA_BITS_8; + config.parity = PARITY_NONE; + config.stop_bits = STOP_BITS_1; + config.invert = NRZ_NORMAL; + + _sci2_serial.ops = &_sci_ops; + _sci2_serial.int_rx = &_sci2_int_rx; + _sci2_serial.config = config; + + rt_hw_serial_register(&_sci2_serial, "sci2", + RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM, + (void*)scilinREG); + + rt_device_control(&_sci2_serial.parent, RT_DEVICE_CTRL_SET_INT, 0); + rt_hw_interrupt_install(SCI_INT_VEC, _irq_wrapper, &_sci2_serial, "sci2"); + rt_hw_interrupt_umask(SCI_INT_VEC); +} diff --git a/bsp/rm48x50/drivers/uart.c b/bsp/rm48x50/drivers/uart.c deleted file mode 100644 index 3f0237e648..0000000000 --- a/bsp/rm48x50/drivers/uart.c +++ /dev/null @@ -1,210 +0,0 @@ -/* - * File : uart.c - * This file is part of RT-Thread RTOS - * COPYRIGHT (C) 2013, RT-Thread Develop Team - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://openlab.rt-thread.com/license/LICENSE - * - * Change Logs: - * Date Author Notes - * 2013-05-27 Grissiom port to RM48x50 - */ - -/* welcome, if you open this file, you may want to see uart driver code. - * However, TI call it Serial Communication Interface(SCI) and all the low - * level API is prefixed by "sci". To avoid messive renaming, I want to keep - * with TI and call all the things SCI. You could safely substitude the word - * "sci" with "uart". Enjoy. */ - -#include -#include -#include - -#include - -/* bring from sci.h */ -enum sciIntFlags -{ - SCI_FE_INT = 0x04000000U, /* framing error */ - SCI_OE_INT = 0x02000000U, /* overrun error */ - SCI_PE_INT = 0x01000000U, /* parity error */ - SCI_RX_INT = 0x00000200U, /* receive buffer ready */ - SCI_TX_INT = 0x00000100U, /* transmit buffer ready */ - SCI_WAKE_INT = 0x00000002U, /* wakeup */ - SCI_BREAK_INT = 0x00000001U /* break detect */ -}; - -/* LIN1 High level interrupt. Change this if you set a different channel in - * HALCoGen. */ -#define SCI_INT_VEC 14 - -#define VCLK_HZ 100000000L - -static rt_err_t _configure(struct rt_serial_device *serial, struct serial_configure *cfg) -{ - /** - global control 1 */ - rt_uint32_t gcr1 = (1U << 25U) /* enable transmit */ - | (1U << 24U) /* enable receive */ - | (1U << 5U) /* internal clock (device has no clock pin) */ - | (1U << 1U); /* asynchronous timing mode */ - if (cfg->stop_bits == STOP_BITS_2) - gcr1 |= (1U << 4U); /* number of stop bits */ - else if (cfg->stop_bits != STOP_BITS_1) - return -RT_ERROR; - - if (cfg->parity == PARITY_EVEN) - { - gcr1 |= (1U << 3U) | (1U << 2U); - } - else if (cfg->parity == PARITY_ODD) - { - gcr1 |= (0U << 3U) | (1U << 2U); - } - - /** - bring SCI out of reset */ - scilinREG->GCR0 = 1U; - - /** - Disable all interrupts */ - scilinREG->CLRINT = 0xFFFFFFFFU; - scilinREG->CLRINTLVL = 0xFFFFFFFFU; - - scilinREG->GCR1 = gcr1; - - /** - set baudrate */ - scilinREG->BRS = VCLK_HZ/16/cfg->baud_rate - 1; /* baudrate */ - - /** - transmission length */ - scilinREG->FORMAT = cfg->data_bits - 1; /* length */ - - /** - set SCI pins functional mode */ - scilinREG->FUN = (1U << 2U) /* tx pin */ - | (1U << 1U) /* rx pin */ - | (0U); /* clk pin */ - - /** - set SCI pins default output value */ - scilinREG->DOUT = (0U << 2U) /* tx pin */ - | (0U << 1U) /* rx pin */ - | (0U); /* clk pin */ - - /** - set SCI pins output direction */ - scilinREG->DIR = (0U << 2U) /* tx pin */ - | (0U << 1U) /* rx pin */ - | (0U); /* clk pin */ - - /** - set SCI pins open drain enable */ - scilinREG->ODR = (0U << 2U) /* tx pin */ - | (0U << 1U) /* rx pin */ - | (0U); /* clk pin */ - - /** - set SCI pins pullup/pulldown enable */ - scilinREG->PD = (0U << 2U) /* tx pin */ - | (0U << 1U) /* rx pin */ - | (0U); /* clk pin */ - - /** - set SCI pins pullup/pulldown select */ - scilinREG->PSL = (1U << 2U) /* tx pin */ - | (1U << 1U) /* rx pin */ - | (1U); /* clk pin */ - - /** - set interrupt level */ - scilinREG->SETINTLVL = (0U << 26U) /* Framing error */ - | (0U << 25U) /* Overrun error */ - | (0U << 24U) /* Parity error */ - | (0U << 9U) /* Receive */ - | (0U << 8U) /* Transmit */ - | (0U << 1U) /* Wakeup */ - | (0U); /* Break detect */ - - /** - set interrupt enable */ - scilinREG->SETINT = (0U << 26U) /* Framing error */ - | (0U << 25U) /* Overrun error */ - | (0U << 24U) /* Parity error */ - | (1U << 9U) /* Receive */ - | (0U << 1U) /* Wakeup */ - | (0U); /* Break detect */ - - /** - Finaly start SCILIN */ - scilinREG->GCR1 |= (1U << 7U); - - return RT_EOK; -} - -static rt_err_t _control(struct rt_serial_device *serial, int cmd, void *arg) -{ - sciBASE_t *sci = (sciBASE_t*)serial->parent.user_data; - - switch (cmd) - { - case RT_DEVICE_CTRL_CLR_INT: - /* disable rx irq */ - sci->CLRINT = SCI_RX_INT; - break; - case RT_DEVICE_CTRL_SET_INT: - /* enable rx irq */ - sci->SETINT = SCI_RX_INT; - break; - } - - return RT_EOK; -} - -static int _putc(struct rt_serial_device *serial, char c) -{ - sciBASE_t *sci = (sciBASE_t*)serial->parent.user_data; - while ((sci->FLR & SCI_TX_INT) == 0U) - ; - sci->TD = c; - return 1; -} - -static int _getc(struct rt_serial_device *serial) -{ - sciBASE_t *sci = (sciBASE_t*)serial->parent.user_data; - if (sci->FLR & (1<<9)) - return (sci->RD & 0x000000FFU); - else - return -1; -} - -static const struct rt_uart_ops _sci_ops = -{ - _configure, - _control, - _putc, - _getc, -}; - -static void _irq_wrapper(int vector, void *param) -{ - rt_hw_serial_isr((struct rt_serial_device*)param); -} - -static struct rt_serial_device _sci2_serial; -static struct serial_ringbuffer _sci2_int_rx; - -void rt_hw_uart_init(void) -{ - struct serial_configure config; - - /* fake configuration */ - config.baud_rate = BAUD_RATE_115200; - config.bit_order = BIT_ORDER_LSB; - config.data_bits = DATA_BITS_8; - config.parity = PARITY_NONE; - config.stop_bits = STOP_BITS_1; - config.invert = NRZ_NORMAL; - - _sci2_serial.ops = &_sci_ops; - _sci2_serial.int_rx = &_sci2_int_rx; - _sci2_serial.config = config; - - rt_hw_serial_register(&_sci2_serial, "sci2", - RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM, - (void*)scilinREG); - - rt_device_control(&_sci2_serial.parent, RT_DEVICE_CTRL_SET_INT, 0); - rt_hw_interrupt_install(SCI_INT_VEC, _irq_wrapper, &_sci2_serial, "sci2"); - rt_hw_interrupt_umask(SCI_INT_VEC); -} -- cgit v1.3.1