rusefi
/
ChibiOS-Contrib
mirror of https://github.com/rusefi/ChibiOS-Contrib.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Add initial serial driver

This commit is contained in:
Fabio Utzig 2015-05-13 22:19:05 -03:00
parent 006b6a93d0
commit c37554ca20
3 changed files with 327 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
os/hal/ports/NRF51/NRF51822/platform.mk
View File

@ -1,6 +1,7 @@
# List of all the NRF51x platform files.
PLATFORMSRC = ${CHIBIOS}/os/hal/ports/common/ARMCMx/nvic.c \
${CHIBIOS}/community/os/hal/ports/NRF51/NRF51822/hal_lld.c \
${CHIBIOS}/community/os/hal/ports/NRF51/NRF51822/serial_lld.c \
${CHIBIOS}/community/os/hal/ports/NRF51/NRF51822/st_lld.c
# Required include directories

207
os/hal/ports/NRF51/NRF51822/serial_lld.c Normal file
View File

@ -0,0 +1,207 @@
/*
Copyright (C) 2015 Fabio Utzig
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 serial_lld.c
* @brief NRF51822 serial subsystem low level driver source.
*
* @addtogroup SERIAL
* @{
*/
#include "hal.h"
#if (HAL_USE_SERIAL == TRUE) || defined(__DOXYGEN__)
#include "nrf51.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/** @brief USART1 serial driver identifier.*/
#if (NRF51_SERIAL_USE_UART0 == TRUE) || defined(__DOXYGEN__)
SerialDriver SD1;
#endif
/*===========================================================================*/
/* Driver local variables and types. */
/*===========================================================================*/
/**
* @brief Driver default configuration.
*/
static const SerialConfig default_config = {
38400
};
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/**
* @brief Driver output notification.
*/
#if NRF51_SERIAL_USE_UART0 || defined(__DOXYGEN__)
static void notify1(io_queue_t *qp)
{
(void)qp;
//if (NRF_UART0->EVENTS_TXDRDY) {
msg_t b = oqGetI(&SD1.oqueue);
if (b < Q_OK) {
chnAddFlagsI(&SD1, CHN_OUTPUT_EMPTY);
return;
}
NRF_UART0->TXD = b;
//NRF_UART0->INTENCLR = 0x80; // clear TX interrupt
//}
}
#endif
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
#if NRF51_SERIAL_USE_UART0 || defined(__DOXYGEN__)
OSAL_IRQ_HANDLER(Vector48) {
OSAL_IRQ_PROLOGUE();
if (NRF_UART0->EVENTS_RXDRDY) {
osalSysLockFromISR();
if (iqIsEmptyI(&SD1.iqueue))
chnAddFlagsI(&SD1, CHN_INPUT_AVAILABLE);
if (iqPutI(&SD1.iqueue, NRF_UART0->RXD) < Q_OK)
chnAddFlagsI(&SD1, SD_OVERRUN_ERROR);
//NRF_UART0->INTENCLR = 4;
osalSysUnlockFromISR();
}
if (NRF_UART0->EVENTS_TXDRDY) {
msg_t b;
osalSysLockFromISR();
b = oqGetI(&SD1.oqueue);
osalSysUnlockFromISR();
if (b < Q_OK) {
osalSysLockFromISR();
chnAddFlagsI(&SD1, CHN_OUTPUT_EMPTY);
osalSysUnlockFromISR();
NRF_UART0->INTENCLR = 0x80; // clear TX interrupt
} else {
NRF_UART0->TXD = b;
}
}
OSAL_IRQ_EPILOGUE();
}
#endif
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief Low level serial driver initialization.
*
* @notapi
*/
void sd_lld_init(void) {
#if NRF51_SERIAL_USE_UART0 == TRUE
sdObjectInit(&SD1, NULL, notify1);
#endif
}
/**
* @brief Low level serial driver configuration and (re)start.
*
* @param[in] sdp pointer to a @p SerialDriver object
* @param[in] config the architecture-dependent serial driver configuration.
* If this parameter is set to @p NULL then a default
* configuration is used.
*
* @notapi
*/
void sd_lld_start(SerialDriver *sdp, const SerialConfig *config) {
if (config == NULL) {
config = &default_config;
}
if (sdp->state == SD_STOP) {
#if NRF51_SERIAL_USE_UART0 == TRUE
if (sdp == &SD1) {
/* FIXME: some board specific, some hardcodeds! */
/* Configure PINs */
NRF_UART0->PSELRTS = ~0;
NRF_UART0->PSELCTS = ~0;
NRF_GPIO->PIN_CNF[9] = 1;
NRF_UART0->PSELTXD = 9;
NRF_UART0->PSELRXD = 11;
/* 38400!!! */
NRF_UART0->BAUDRATE = 0x009D5000;
/* Enable interrupts for RX, TX and ERROR */
NRF_UART0->INTENSET = 0x284;
nvicEnableVector(UART0_IRQn, 12);
NRF_UART0->ENABLE = 4;
NRF_UART0->TASKS_STARTRX = 1;
NRF_UART0->TASKS_STARTTX = 1;
}
#endif
}
}
/**
* @brief Low level serial driver stop.
* @details De-initializes the USART, stops the associated clock, resets the
* interrupt vector.
*
* @param[in] sdp pointer to a @p SerialDriver object
*
* @notapi
*/
void sd_lld_stop(SerialDriver *sdp) {
if (sdp->state == SD_READY) {
#if NRF51_SERIAL_USE_UART0 == TRUE
if (&SD1 == sdp) {
nvicDisableVector(UART0_IRQn);
}
#endif
}
}
#endif /* HAL_USE_SERIAL == TRUE */
/** @} */

119
os/hal/ports/NRF51/NRF51822/serial_lld.h Normal file
View File

@ -0,0 +1,119 @@
/*
Copyright (C) 2015 Fabio Utzig
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 serial_lld.h
* @brief NRF51822 serial subsystem low level driver header.
*
* @addtogroup SERIAL
* @{
*/
#ifndef _SERIAL_LLD_H_
#define _SERIAL_LLD_H_
#if (HAL_USE_SERIAL == TRUE) || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @name PLATFORM configuration options
* @{
*/
/**
* @brief USART1 driver enable switch.
* @details If set to @p TRUE the support for USART1 is included.
* @note The default is @p FALSE.
*/
#if !defined(NRF51_SERIAL_USE_UART0) || defined(__DOXYGEN__)
#define NRF51_SERIAL_USE_UART0 FALSE
#endif
/** @} */
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief NRF51 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.
* @note This structure content is architecture dependent, each driver
* implementation defines its own version and the custom static
* initializers.
*/
typedef struct {
/**
* @brief Bit rate.
*/
uint32_t speed;
/* End of the mandatory fields.*/
} SerialConfig;
/**
* @brief @p SerialDriver specific data.
*/
#define _serial_driver_data \
_base_asynchronous_channel_data \
/* Driver state.*/ \
sdstate_t state; \
/* Input queue.*/ \
input_queue_t iqueue; \
/* Output queue.*/ \
output_queue_t oqueue; \
/* Input circular buffer.*/ \
uint8_t ib[SERIAL_BUFFERS_SIZE]; \
/* Output circular buffer.*/ \
uint8_t ob[SERIAL_BUFFERS_SIZE]; \
/* End of the mandatory fields.*/
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#if (NRF51_SERIAL_USE_UART0 == TRUE) && !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 == TRUE */
#endif /* _SERIAL_LLD_H_ */
/** @} */