diff options
Diffstat (limited to 'os/hal/platforms/LPC122x/serial_lld.h')
| -rw-r--r-- | os/hal/platforms/LPC122x/serial_lld.h | 317 |
1 files changed, 317 insertions, 0 deletions
diff --git a/os/hal/platforms/LPC122x/serial_lld.h b/os/hal/platforms/LPC122x/serial_lld.h new file mode 100644 index 000000000..c7ed627d0 --- /dev/null +++ b/os/hal/platforms/LPC122x/serial_lld.h @@ -0,0 +1,317 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+/**
+ * @file LPC122x/serial_lld.h
+ * @brief LPC122x low level serial driver header.
+ *
+ * @addtogroup SERIAL
+ * @{
+ */
+
+#ifndef _SERIAL_LLD_H_
+#define _SERIAL_LLD_H_
+
+#if HAL_USE_SERIAL || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
+#define IIR_SRC_MASK 0x0F
+#define IIR_SRC_NONE 0x01
+#define IIR_SRC_MODEM 0x00
+#define IIR_SRC_TX 0x02
+#define IIR_SRC_RX 0x04
+#define IIR_SRC_ERROR 0x06
+#define IIR_SRC_TIMEOUT 0x0C
+
+#define IER_RBR 1
+#define IER_THRE 2
+#define IER_STATUS 4
+
+#define LCR_WL5 0
+#define LCR_WL6 1
+#define LCR_WL7 2
+#define LCR_WL8 3
+#define LCR_STOP1 0
+#define LCR_STOP2 4
+#define LCR_NOPARITY 0
+#define LCR_PARITYODD 0x08
+#define LCR_PARITYEVEN 0x18
+#define LCR_PARITYONE 0x28
+#define LCR_PARITYZERO 0x38
+#define LCR_BREAK_ON 0x40
+#define LCR_DLAB 0x80
+
+#define FCR_ENABLE 1
+#define FCR_RXRESET 2
+#define FCR_TXRESET 4
+#define FCR_TRIGGER0 0
+#define FCR_TRIGGER1 0x40
+#define FCR_TRIGGER2 0x80
+#define FCR_TRIGGER3 0xC0
+
+#define LSR_RBR_FULL 1
+#define LSR_OVERRUN 2
+#define LSR_PARITY 4
+#define LSR_FRAMING 8
+#define LSR_BREAK 0x10
+#define LSR_THRE 0x20
+#define LSR_TEMT 0x40
+#define LSR_RXFE 0x80
+
+#define TER_ENABLE 0x80
+
+/**
+ * @brief RXD0 signal assigned to pin PIO0_1.
+ */
+#define RXD0_IS_PIO0_1 0
+
+/**
+ * @brief RXD0 signal assigned to pin PIO2_1.
+ */
+#define RXD0_IS_PIO2_1 1
+
+/**
+ * @brief TXD0 signal assigned to pin PIO0_2.
+ */
+#define TXD0_IS_PIO0_2 0
+
+/**
+ * @brief TXD0 signal assigned to pin PIO2_2.
+ */
+#define TXD0_IS_PIO2_2 1
+
+/**
+ * @brief RXD1 signal assigned to pin PIO0_8.
+ */
+#define RXD1_IS_PIO0_8 0
+
+/**
+ * @brief RXD1 signal assigned to pin PIO2_11.
+ */
+#define RXD1_IS_PIO2_11 1
+
+/**
+ * @brief RXD1 signal assigned to pin PIO2_12.
+ */
+#define RXD1_IS_PIO2_12 2
+
+/**
+ * @brief TXD1 signal assigned to pin PIO0_9.
+ */
+#define TXD1_IS_PIO0_9 0
+
+/**
+ * @brief TXD1 signal assigned to pin PIO2_10.
+ */
+#define TXD1_IS_PIO2_10 1
+
+/**
+ * @brief TXD1 signal assigned to pin PIO2_13.
+ */
+#define TXD1_IS_PIO2_13 2
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/**
+ * @brief UART0 driver enable switch.
+ * @details If set to @p TRUE the support for UART0 is included.
+ * @note The default is @p TRUE .
+ */
+#if !defined(LPC122x_SERIAL_USE_UART0) || defined(__DOXYGEN__)
+#define LPC122x_SERIAL_USE_UART0 TRUE
+#endif
+
+/**
+ * @brief UART1 driver enable switch.
+ * @details If set to @p TRUE the support for UART0 is included.
+ * @note The default is @p TRUE .
+ */
+#if !defined(LPC122x_SERIAL_USE_UART1) || defined(__DOXYGEN__)
+#define LPC122x_SERIAL_USE_UART1 TRUE
+#endif
+
+/**
+ * @brief FIFO preload parameter.
+ * @details Configuration parameter, this values defines how many bytes are
+ * preloaded in the HW transmit FIFO for each interrupt, the maximum
+ * value is 16 the minimum is 1.
+ * @note An high value reduces the number of interrupts generated but can
+ * also increase the worst case interrupt response time because the
+ * preload loops.
+ */
+#if !defined(LPC122x_SERIAL_FIFO_PRELOAD) || defined(__DOXYGEN__)
+#define LPC122x_SERIAL_FIFO_PRELOAD 16
+#endif
+
+/**
+ * @brief UART0 PCLK divider.
+ */
+#if !defined(LPC122x_SERIAL_UART0CLKDIV) || defined(__DOXYGEN__)
+#define LPC122x_SERIAL_UART0CLKDIV 1
+#endif
+
+/**
+ * @brief UART1 PCLK divider.
+ */
+#if !defined(LPC122x_SERIAL_UART1CLKDIV) || defined(__DOXYGEN__)
+#define LPC122x_SERIAL_UART1CLKDIV 1
+#endif
+
+/**
+ * @brief UART0 interrupt priority level setting.
+ */
+#if !defined(LPC122x_SERIAL_UART0_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define LPC122x_SERIAL_UART0_IRQ_PRIORITY 3
+#endif
+
+/**
+ * @brief UART0 interrupt priority level setting.
+ */
+#if !defined(LPC122x_SERIAL_UART1_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define LPC122x_SERIAL_UART1_IRQ_PRIORITY 3
+#endif
+
+/**
+ * @brief RXD0 signal selector.
+ */
+#if !defined(LPC122x_SERIAL_RXD0_SELECTOR) || defined(__DOXYGEN__)
+#define LPC122x_SERIAL_RXD0_SELECTOR RXD0_IS_PIO0_1
+#endif
+
+/**
+ * @brief TXD0 signal selector.
+ */
+#if !defined(LPC122x_SERIAL_TXD0_SELECTOR) || defined(__DOXYGEN__)
+#define LPC122x_SERIAL_TXD0_SELECTOR TXD0_IS_PIO0_2
+#endif
+
+/**
+ * @brief RXD1 signal selector.
+ */
+#if !defined(LPC122x_SERIAL_RXD1_SELECTOR) || defined(__DOXYGEN__)
+#define LPC122x_SERIAL_RXD1_SELECTOR RXD1_IS_PIO0_8
+#endif
+
+/**
+ * @brief TXD1 signal selector.
+ */
+#if !defined(LPC122x_SERIAL_TXD1_SELECTOR) || defined(__DOXYGEN__)
+#define LPC122x_SERIAL_TXD1_SELECTOR TXD1_IS_PIO0_9
+#endif
+
+/*===========================================================================*/
+/* Derived constants and error checks. */
+/*===========================================================================*/
+
+#if (LPC122x_SERIAL_UART0CLKDIV < 1) || (LPC122x_SERIAL_UART0CLKDIV > 255)
+#error "invalid LPC122x_SERIAL_UART0CLKDIV setting"
+#endif
+
+#if (LPC122x_SERIAL_UART1CLKDIV < 1) || (LPC122x_SERIAL_UART10CLKDIV > 255)
+#error "invalid LPC122x_SERIAL_UART1CLKDIV setting"
+#endif
+
+#if (LPC122x_SERIAL_FIFO_PRELOAD < 1) || (LPC122x_SERIAL_FIFO_PRELOAD > 16)
+#error "invalid LPC122x_SERIAL_FIFO_PRELOAD setting"
+#endif
+
+/**
+ * @brief UART0 clock.
+ */
+#define LPC122x_SERIAL_UART0_PCLK \
+ (LPC122x_MAINCLK / LPC122x_SERIAL_UART0CLKDIV)
+
+/**
+ * @brief UART0 clock.
+ */
+#define LPC122x_SERIAL_UART1_PCLK \
+ (LPC122x_MAINCLK / LPC122x_SERIAL_UART1CLKDIV)
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/**
+ * @brief LPC122x Serial Driver configuration structure.
+ * @details An instance of this structure must be passed to @p sdStart()
+ * in order to configure and start a serial driver operations.
+ */
+typedef struct {
+ /**
+ * @brief Bit rate.
+ */
+ uint32_t sc_speed;
+ /**
+ * @brief Initialization value for the LCR register.
+ */
+ uint32_t sc_lcr;
+ /**
+ * @brief Initialization value for the FCR register.
+ */
+ uint32_t sc_fcr;
+} SerialConfig;
+
+/**
+ * @brief @p SerialDriver specific data.
+ */
+#define _serial_driver_data \
+ _base_asynchronous_channel_data \
+ /* Driver state.*/ \
+ sdstate_t state; \
+ /* Input queue.*/ \
+ InputQueue iqueue; \
+ /* Output queue.*/ \
+ OutputQueue oqueue; \
+ /* Input circular buffer.*/ \
+ uint8_t ib[SERIAL_BUFFERS_SIZE]; \
+ /* Output circular buffer.*/ \
+ uint8_t ob[SERIAL_BUFFERS_SIZE]; \
+ /* End of the mandatory fields.*/ \
+ /* Pointer to the USART registers block.*/ \
+ LPC_UART0_Type *uart;
+
+/*===========================================================================*/
+/* Driver macros. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#if LPC122x_SERIAL_USE_UART0 && !defined(__DOXYGEN__)
+extern SerialDriver SD1;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void sd_lld_init(void);
+ void sd_lld_start(SerialDriver *sdp, const SerialConfig *config);
+ void sd_lld_stop(SerialDriver *sdp);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_SERIAL */
+
+#endif /* _SERIAL_LLD_H_ */
+
+/** @} */
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