From 40b2d98d866cf7f779855160fb4fe1bed6428f8c Mon Sep 17 00:00:00 2001 From: gdisirio Date: Sat, 4 Jul 2009 13:15:42 +0000 Subject: [PATCH] git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1054 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- ports/ARM7-LPC214x/pal_lld.c | 60 +++++++++++ ports/ARM7-LPC214x/pal_lld.h | 35 ++++++- ports/ARMCM3-STM32F103/pal_lld.c | 164 +++++++++++++++++++++++++++++++ src/templates/pal_lld.h | 15 +-- 4 files changed, 262 insertions(+), 12 deletions(-) create mode 100644 ports/ARM7-LPC214x/pal_lld.c create mode 100644 ports/ARMCM3-STM32F103/pal_lld.c diff --git a/ports/ARM7-LPC214x/pal_lld.c b/ports/ARM7-LPC214x/pal_lld.c new file mode 100644 index 000000000..3c06f39ce --- /dev/null +++ b/ports/ARM7-LPC214x/pal_lld.c @@ -0,0 +1,60 @@ +/* + ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +/** + * @file ports/ARM7-LPC214x/pal_lld.c + * @brief LPC214x FIO low level driver code + * @addtogroup LPC214x_PAL + * @{ + */ + +#include +#include + +/** + * @brief LPC214x I/O ports configuration. + * @details Ports A-D clocks enabled, AFIO clock enabled. + * + * @param[in] config the LPC214x ports configuration + */ +void _pal_lld_init(const LPC214xFIOConfig *config) { +} + +/** + * @brief Pads mode setup. + * @details This function programs a pads group belonging to the same port + * with the specified mode. + * + * @param[in] port the port identifier + * @param[in] mask the group mask + * @param[in] mode the mode + * + * @note This function is not meant to be invoked directly by the application + * code. + * @note @p PAL_MODE_UNCONNECTED is implemented as push pull output. + * @note Writing on pads programmed as pull-up or pull-down has the side + * effect to modify the resistor setting because the output latched data + * is used for the resistor selection. + */ +void _pal_lld_setgroupmode(ioportid_t port, + ioportmask_t mask, + uint_fast8_t mode) { +} + +/** @} */ diff --git a/ports/ARM7-LPC214x/pal_lld.h b/ports/ARM7-LPC214x/pal_lld.h index e2ea34b54..bb0f2efac 100644 --- a/ports/ARM7-LPC214x/pal_lld.h +++ b/ports/ARM7-LPC214x/pal_lld.h @@ -19,7 +19,7 @@ /** * @file ports/ARM7-LPC214x/pal_lld.h - * @brief LPC214x FIO low level driver + * @brief LPC214x FIO low level driver header * @addtogroup LPC214x_PAL * @{ */ @@ -31,10 +31,32 @@ #include "lpc214x.h" #endif +/*===========================================================================*/ +/* Unsupported modes and specific modes */ +/*===========================================================================*/ + +#undef PAL_MODE_INPUT_PULLUP +#undef PAL_MODE_INPUT_PULLDOWN +#undef PAL_MODE_OUTPUT_OPENDRAIN + /*===========================================================================*/ /* I/O Ports Types and constants. */ /*===========================================================================*/ +/** + * @brief LPC214x FIO static initializer. + * @details An instance of this structure must be passed to @p palInit() at + * system startup time in order to initialized the digital I/O + * subsystem. This represents only the initial setup, specific pads + * or whole ports can be reprogrammed at later time. + */ +typedef struct { + /** @brief Port 0 setup data.*/ + ioportmask_t P0Data; + /** @brief Port 1 setup data.*/ + ioportmask_t P1Data; +} LPC214xFIOConfig; + /** * @brief Width, in bits, of an I/O port. */ @@ -183,6 +205,17 @@ typedef FIO * ioportid_t; (port)->FIO_DIR = (dir); \ } +#ifdef __cplusplus +extern "C" { +#endif + void _pal_lld_init(const LPC214xFIOConfig *config); + void _pal_lld_setgroupmode(ioportid_t port, + ioportmask_t mask, + uint_fast8_t mode); +#ifdef __cplusplus +} +#endif + #endif /* _PAL_LLD_H_ */ /** @} */ diff --git a/ports/ARMCM3-STM32F103/pal_lld.c b/ports/ARMCM3-STM32F103/pal_lld.c new file mode 100644 index 000000000..292a64f81 --- /dev/null +++ b/ports/ARMCM3-STM32F103/pal_lld.c @@ -0,0 +1,164 @@ +/* + ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +/** + * @file ports/ARMCM3-STM32F103/pal_lld.c + * @brief STM32 GPIO low level driver code + * @addtogroup STM32F103_PAL + * @{ + */ + +#include +#include + +/** + * @brief STM32 I/O ports configuration. + * @details Ports A-D clocks enabled, AFIO clock enabled. + * + * @param[in] config the STM32 ports configuration + */ +void _pal_lld_init(const STM32GPIOConfig *config) { + uint32_t clocks = RCC_APB2ENR_AFIOEN; + +#if defined(_GPIOA) + clocks |= RCC_APB2ENR_IOPAEN; +#endif +#if defined(_GPIOB) + clocks |= RCC_APB2ENR_IOPBEN; +#endif +#if defined(_GPIOC) + clocks |= RCC_APB2ENR_IOPCEN; +#endif +#if defined(_GPIOD) + clocks |= RCC_APB2ENR_IOPDEN; +#endif +#if defined(_GPIOE) + clocks |= RCC_APB2ENR_IOPEEN; +#endif + RCC->APB2ENR |= clocks; + + /* + * Resets the GPIO ports and AFIO. + */ + RCC->APB2RSTR = RCC_APB2RSTR_IOPARST | RCC_APB2RSTR_IOPBRST | + RCC_APB2RSTR_IOPCRST | RCC_APB2RSTR_IOPDRST | + RCC_APB2RSTR_IOPERST | RCC_APB2RSTR_IOPFRST | + RCC_APB2RSTR_IOPGRST | RCC_APB2RSTR_AFIORST; + RCC->APB2RSTR = 0; + +#if defined(_GPIOA) + IOPORT_A->ODR = config->PAData.odr; + IOPORT_A->CRH = config->PAData.crh; + IOPORT_A->CRL = config->PAData.crl; +#endif + +#if defined(_GPIOB) + IOPORT_B->ODR = config->PBData.odr; + IOPORT_B->CRH = config->PBData.crh; + IOPORT_B->CRL = config->PBData.crl; +#endif + +#if defined(_GPIOC) + IOPORT_C->ODR = config->PCData.odr; + IOPORT_C->CRH = config->PCData.crh; + IOPORT_C->CRL = config->PCData.crl; +#endif + +#if defined(_GPIOD) + IOPORT_D->ODR = config->PDData.odr; + IOPORT_D->CRH = config->PDData.crh; + IOPORT_D->CRL = config->PDData.crl; +#endif + +#if defined(_GPIOE) + IOPORT_E->ODR = config->PEData.odr; + IOPORT_E->CRH = config->PEData.crh; + IOPORT_E->CRL = config->PEData.crl; +#endif + +#if defined(_GPIOF) + IOPORT_F->ODR = config->PFData.odr; + IOPORT_F->CRH = config->PFData.crh; + IOPORT_F->CRL = config->PFData.crl; +#endif + +#if defined(_GPIOG) + IOPORT_G->ODR = config->PGData.odr; + IOPORT_G->CRH = config->PGData.crh; + IOPORT_G->CRL = config->PGData.crl; +#endif +} + +/** + * @brief Pads mode setup. + * @details This function programs a pads group belonging to the same port + * with the specified mode. + * + * @param[in] port the port identifier + * @param[in] mask the group mask + * @param[in] mode the mode + * + * @note This function is not meant to be invoked directly by the application + * code. + * @note @p PAL_MODE_UNCONNECTED is implemented as push pull output at 2MHz. + * @note Writing on pads programmed as pull-up or pull-down has the side + * effect to modify the resistor setting because the output latched data + * is used for the resistor selection. + */ +void _pal_lld_setgroupmode(ioportid_t port, + ioportmask_t mask, + uint_fast8_t mode) { + static const uint8_t cfgtab[] = { + 4, /* PAL_MODE_RESET, implemented as input.*/ + 2, /* PAL_MODE_UNCONNECTED, implemented as push pull output 2MHz.*/ + 4, /* PAL_MODE_INPUT */ + 8, /* PAL_MODE_INPUT_PULLUP */ + 8, /* PAL_MODE_INPUT_PULLDOWN */ + 3, /* PAL_MODE_OUTPUT_PUSHPULL, 50MHz.*/ + 7, /* PAL_MODE_OUTPUT_OPENDRAIN, 50MHz.*/ + }; + uint32_t mh, ml, crh, crl, cfg; + unsigned i; + + if (mode == PAL_MODE_INPUT_PULLUP) + port->BSRR = mask; + else if (mode == PAL_MODE_INPUT_PULLDOWN) + port->BRR = mask; + cfg = cfgtab[mode]; + mh = ml = crh = crl = 0; + for (i = 0; i < 8; i++) { + ml <<= 4; + mh <<= 4; + crl <<= 4; + crh <<= 4; + if ((mask & 1) == 0) + ml |= 0xf; + else + crl |= cfg; + if ((mask & 0x10000) == 0) + mh |= 0xf; + else + crh |= cfg; + mask >>= 1; + } + port->CRH = (port->CRH & mh) | crh; + port->CRL = (port->CRL & ml) | crl; +} + +/** @} */ diff --git a/src/templates/pal_lld.h b/src/templates/pal_lld.h index 12dcea77f..f594dd143 100644 --- a/src/templates/pal_lld.h +++ b/src/templates/pal_lld.h @@ -27,6 +27,10 @@ #ifndef _PAL_LLD_H_ #define _PAL_LLD_H_ +/*===========================================================================*/ +/* Unsupported modes and specific modes */ +/*===========================================================================*/ + /*===========================================================================*/ /* I/O Ports Types and constants. */ /*===========================================================================*/ @@ -313,17 +317,6 @@ typedef uint32_t ioportid_t; */ #define pal_lld_setpadmode(port, pad, mode) -#ifdef __cplusplus -extern "C" { -#endif - ioportmask_t palReadBus(IOBus *bus); - void palWriteBus(IOBus *bus, ioportmask_t bits); - void palSetBusMode(IOBus *bus, uint_fast8_t mode); -#ifdef __cplusplus -} -#endif - - #endif /* _PAL_LLD_H_ */ /** @} */