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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012 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 <http://www.gnu.org/licenses/>.
*/
/**
* @file templates/hal_lld.h
* @brief HAL subsystem low level driver header template.
* @pre This module requires the following macros to be defined in the
* @p board.h file:
* - SAM_OSC32K_CLK.
* - SAM_OSC32K_MODE_EXT (optional)
* - SAM_OSC0_CLK.
* - SAM_OSCCTRL_MODE
* .
*
* @addtogroup HAL
* @{
*/
#ifndef _HAL_LLD_H_
#define _HAL_LLD_H_
#include "sam4l.h"
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
/**
* @brief Defines the support for realtime counters in the HAL.
*/
#define HAL_IMPLEMENTS_COUNTERS TRUE
/**
* @brief Platform name
*/
#define PLATFORM_NAME "SAM4L Series"
/**
* @name Internal clock sources
* @{
*/
#define SAM_RC32K_CLK 32768
#define SAM_RCSYS_CLK 115000
#define SAM_RC1M_CLK 1000000
#define SAM_RCFAST0_CLK 4000000
#define SAM_RCFAST1_CLK 8000000
#define SAM_RCFAST2_CLK 12000000
#define SAM_RC80M_CLK 80000000
/** @} */
/**
* @name BUS IDs
* @{
*/
#define SAM_CLK_GRP_CPU 0
#define SAM_CLK_GRP_HSB 1
#define SAM_CLK_GRP_PBA 2
#define SAM_CLK_GRP_PBB 3
#define SAM_CLK_GRP_PBC 4
#define SAM_CLK_GRP_PBD 5
/** @} */
/**
* @name Clocks derived from the HSB clock
* @{
*/
#define SAM_HSB_PDCA_HSB 0
#define SAM_HSB_HFLASHC_DATA 1
#define SAM_HSB_HRAMC1_DATA 2
#define SAM_HSB_USBC_DATA 3
#define SAM_HSB_CRCCU_DATA 4
#define SAM_HSB_PBA_BRIDGE 5
#define SAM_HSB_PBB_BRIDGE 6
#define SAM_HSB_PBC_BRIDGE 7
#define SAM_HSB_PBD_BRIDGE 8
#define SAM_HSB_AESA_HSB 9
/** @} */
/**
* @name Clocks derived from the PBA clock
* @{
*/
#define SAM_PBA_IISC 0
#define SAM_PBA_SPI 1
#define SAM_PBA_TC0 2
#define SAM_PBA_TC1 3
#define SAM_PBA_TWIM0 4
#define SAM_PBA_TWIS0 5
#define SAM_PBA_TWIM1 6
#define SAM_PBA_TWIS1 7
#define SAM_PBA_USART0 8
#define SAM_PBA_USART1 9
#define SAM_PBA_USART2 10
#define SAM_PBA_USART3 11
#define SAM_PBA_ADCIFE 12
#define SAM_PBA_DACC 13
#define SAM_PBA_ACIFC 14
#define SAM_PBA_GLOC 15
#define SAM_PBA_ABDACB 16
#define SAM_PBA_TRNG 17
#define SAM_PBA_PARC 18
#define SAM_PBA_CATB 19
#define SAM_PBA_TWIM2 21
#define SAM_PBA_TWIM3 22
#define SAM_PBA_LCDCA 23
/** @} */
/**
* @name Clocks derived from the PBB clock
* @{
*/
#define SAM_PBB_HFLASHC_REGS 0
#define SAM_PBB_HRAMC1_REGS 1
#define SAM_PBB_HMATRIX 2
#define SAM_PBB_PDCA_PB 3
#define SAM_PBB_CRCCU_REGS 4
#define SAM_PBB_USBC_REGS 5
#define SAM_PBB_PEVC 6
/** @} */
/**
* @name Clocks derived from the PBC clock
* @{
*/
#define SAM_PBC_PM 0
#define SAM_PBC_CHIPID 1
#define SAM_PBC_SCIF 2
#define SAM_PBC_FREQM 3
#define SAM_PBC_GPIO 4
/* @} */
/**
* @name Clocks derived from the PBD clock
* @{
*/
#define SAM_PBD_BPM 0
#define SAM_PBD_BSCIF 1
#define SAM_PBD_AST 2
#define SAM_PBD_WDT 3
#define SAM_PBD_EIC 4
#define SAM_PBD_PICOUART 5
/** @} */
/**
* @name MCCTRL register bits definitions
* @{
*/
#define SAM_MCSEL_MASK (7 << 0) /**< MCSEL bits mask. */
#define SAM_MCSEL_RCSYS (0 << 0) /**< System RC oscillator. */
#define SAM_MCSEL_OSC0 (1 << 0) /**< Oscillator 0. */
#define SAM_MCSEL_PLL (2 << 0) /**< PLL. */
#define SAM_MCSEL_DFLL (3 << 0) /**< DFLL. */
#define SAM_MCSEL_RC80M (4 << 0) /**< 80 MHz RC oscillator. */
#define SAM_MCSEL_RCFAST (5 << 0) /**< 4/8/12 MHz RC oscillator. */
#define SAM_MCSEL_RC1M (6 << 0) /**< 1 MHz RC oscillator. */
/** @} */
/**
* @name CPUSEL register bits definitions
* @{
*/
#define SAM_CPUSEL_MASK (7 << 0) /**< CPUSEL bits mask. */
#define SAM_CPUSEL_DIV1 0
#define SAM_CPUSEL_DIV2 (SAM_CPUDIV | 0)
#define SAM_CPUSEL_DIV4 (SAM_CPUDIV | 1)
#define SAM_CPUSEL_DIV8 (SAM_CPUDIV | 2)
#define SAM_CPUSEL_DIV16 (SAM_CPUDIV | 3)
#define SAM_CPUSEL_DIV32 (SAM_CPUDIV | 4)
#define SAM_CPUSEL_DIV64 (SAM_CPUDIV | 5)
#define SAM_CPUSEL_DIV128 (SAM_CPUDIV | 6)
#define SAM_CPUSEL_DIV256 (SAM_CPUDIV | 7)
#define SAM_CPUDIV (1 << 7) /**< CPUDIV bit. */
/**
* @name PBx registers bits definitions
* @{
*/
#define SAM_PBSEL_MASK (7 << 0) /**< PBSEL bits mask. */
#define SAM_PBSEL_DIV1 0
#define SAM_PBSEL_DIV2 (SAM_CPUDIV | 0)
#define SAM_PBSEL_DIV4 (SAM_CPUDIV | 1)
#define SAM_PBSEL_DIV8 (SAM_CPUDIV | 2)
#define SAM_PBSEL_DIV16 (SAM_CPUDIV | 3)
#define SAM_PBSEL_DIV32 (SAM_CPUDIV | 4)
#define SAM_PBSEL_DIV64 (SAM_CPUDIV | 5)
#define SAM_PBSEL_DIV128 (SAM_CPUDIV | 6)
#define SAM_PBSEL_DIV256 (SAM_CPUDIV | 7)
#define SAM_PBDIV (1 << 7) /**< PBDIV bit. */
/** @} */
/**
* @name RCFASTCFG registers bits definitions
* @{
*/
#define SAM_RCFASTCFG_FRANGE_4M 0x00000000
#define SAM_RCFASTCFG_FRANGE_8M 0x00000100
#define SAM_RCFASTCFG_FRANGE_12M 0x00000200
/** @} */
/**
* @name PMCON registers bits definitions
* @{
*/
#define SAM_PMCON_PS0 (0 << 0)
#define SAM_PMCON_PS1 (1 << 0)
/** @} */
/**
* @name OSCCTRL0 registers bits definitions
* @{
*/
#define SAM_OSCCTRL_MODE_EXT (0 << 0)
#define SAM_OSCCTRL_MODE_XTAL (1 << 0)
#define SAM_OSCCTRL_GAIN_0 (0 << 1)
#define SAM_OSCCTRL_GAIN_1 (1 << 1)
#define SAM_OSCCTRL_GAIN_2 (2 << 1)
#define SAM_OSCCTRL_GAIN_3 (3 << 1)
#define SAM_OSCCTRL_OSCEN (1 << 16)
/** @} */
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @name Configuration options
* @{
*/
/**
* @brief Disables the clock initialization in the HAL.
*/
#if !defined(SAM_NO_INIT) || defined(__DOXYGEN__)
#define SAM_NO_INIT FALSE
#endif
/**
* @brief Power Scalability mode.
*/
#if !defined(SAM_PMCON_PS) || defined(__DOXYGEN__)
#define SAM_PMCON_PS SAM_PMCON_PS0
#endif
/**
* @brief MCCTRL register settings.
*/
#if !defined(SAM_MCCTRL_MCSEL) || defined(__DOXYGEN__)
#define SAM_MCCTRL_MCSEL SAM_MCSEL_PLL
#endif
/**
* @brief CPUSEL register settings.
*/
#if !defined(SAM_CPUSEL) || defined(__DOXYGEN__)
#define SAM_CPUSEL SAM_CPUSEL_DIV1
#endif
/**
* @brief PBASEL register settings.
*/
#if !defined(SAM_PBASEL) || defined(__DOXYGEN__)
#define SAM_PBASEL SAM_PBSEL_DIV1
#endif
/**
* @brief PBBSEL register settings.
*/
#if !defined(SAM_PBBSEL) || defined(__DOXYGEN__)
#define SAM_PBBSEL SAM_PBSEL_DIV1
#endif
/**
* @brief PBCSEL register settings.
*/
#if !defined(SAM_PBCSEL) || defined(__DOXYGEN__)
#define SAM_PBCSEL SAM_PBSEL_DIV1
#endif
/**
* @brief PBDSEL register settings.
*/
#if !defined(SAM_PBDSEL) || defined(__DOXYGEN__)
#define SAM_PBDSEL SAM_PBSEL_DIV1
#endif
/**
* @brief PBDSEL register settings.
*/
#if !defined(SAM_PBDSEL) || defined(__DOXYGEN__)
#define SAM_RCFAST_FRANGE SAM_RCFASTCFG_FRANGE_4M
#endif
/** @} */
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
/**
* @name Clock limits depending on power scaling mode
* @{
*/
#if (SAM_PMCON_PS == SAM_PMCON_PS0)|| defined(__DOXYGEN__)
#define SAM_CPUCLK_MAX 50000000
#define SAM_PBACLK_MAX 50000000
#define SAM_PBBCLK_MAX 50000000
#define SAM_PBCCLK_MAX 50000000
#define SAM_PBDCLK_MAX 50000000
#define SAM_FLASH0WS_MAX 18000000
#define SAM_FLASH1WS_MAX 36000000
#define SAM_FLASH1WS_FWU_MAX 12000000
#elif SAM_PMCON_PS == SAM_PMCON_PS1
#define SAM_CPUCLK_MAX 12000000
#define SAM_PBACLK_MAX 12000000
#define SAM_PBBCLK_MAX 12000000
#define SAM_PBCCLK_MAX 12000000
#define SAM_PBDCLK_MAX 12000000
#define SAM_FLASH0WS_MAX 8000000
#define SAM_FLASH1WS_MAX 12000000
#define SAM_FLASH1WS_FWU_MAX 0
#else
#error "invalid SAM_PMCON_PS value specified"
#endif
/** @} */
/* OSC0 mode check.*/
#if (SAM_OSCCTRL_MODE != SAM_OSCCTRL_MODE_EXT) && \
(SAM_OSCCTRL_MODE != SAM_OSCCTRL_MODE_XTAL)
#error "invalid SAM_OSCCTRL_MODE value specified"
#endif
/**
* @brief OSC0 gain setting.
*/
#if SAM_OSCCTRL_MODE == SAM_OSCCTRL_MODE_EXT
#define SAM_OSCCTRL_GAIN 0
#else
#if SAM_OSC0_CLK < 12000000
#define SAM_OSCCTRL_GAIN SAM_OSCCTRL_GAIN_0
#elif SAM_OSC0_CLK < 16000000
#define SAM_OSCCTRL_GAIN SAM_OSCCTRL_GAIN_1
#else
#define SAM_OSCCTRL_GAIN SAM_OSCCTRL_GAIN_2
#endif
#endif
/**
* @brief OSC0 startup setting.
*/
#define SAM_OSCCTRL_STARTUP SCIF_OSCCTRL0_STARTUP(2)
/**
* @brief Selected RCFAST clock frequency.
*/
#if (SAM_RCFAST_FRANGE == SAM_RCFASTCFG_FRANGE_4M)|| defined(__DOXYGEN__)
#define SAM_RCFAST_CLK SAM_RCFAST0_CLK
#elif SAM_RCFAST_FRANGE == SAM_RCFASTCFG_FRANGE_8M
#define SAM_RCFAST_CLK SAM_RCFAST1_CLK
#elif SAM_RCFAST_FRANGE == SAM_RCFASTCFG_FRANGE_12M
#define SAM_RCFAST_CLK SAM_RCFAST2_CLK
#else
#error "invalid SAM_RCFAST_FRANGE value specified"
#endif
/**
* @brief Selected main clock frequency.
*/
#if (SAM_MCCTRL_MCSEL == SAM_MCSEL_RCSYS) || defined(__DOXYGEN__)
#define SAM_MAIN_CLK SAM_RCSYS_CLK
#elif SAM_MCCTRL_MCSEL == SAM_MCSEL_OSC0
#define SAM_MAIN_CLK SAM_OSC0_CLK
#elif SAM_MCCTRL_MCSEL == SAM_MCSEL_PLL
#define SAM_MAIN_CLK 0
#elif SAM_MCCTRL_MCSEL == SAM_MCSEL_DFLL
#define SAM_MAIN_CLK 0
#elif SAM_MCCTRL_MCSEL == SAM_MCSEL_RC80M
#define SAM_MAIN_CLK SAM_RC80M_CLK
#elif SAM_MCCTRL_MCSEL == SAM_MCSEL_RCFAST
#define SAM_MAIN_CLK SAM_RCFAST_CLK
#elif SAM_MCCTRL_MCSEL == SAM_MCSEL_RC1M
#define SAM_MAIN_CLK SAM_RC1M_CLK
#else
#error "invalid SAM_MCCTRL_MCSEL value specified"
#endif
/**
* @brief CPU clock.
*/
#if (SAM_CPUSEL == SAM_CPUSEL_DIV1) || defined(__DOXYGEN__)
#define SAM_CPU_CLK (SAM_MAIN_CLK / 1)
#elif SAM_CPUSEL == SAM_CPUSEL_DIV2
#define SAM_CPU_CLK (SAM_MAIN_CLK / 2)
#elif SAM_CPUSEL == SAM_CPUSEL_DIV4
#define SAM_CPU_CLK (SAM_MAIN_CLK / 4)
#elif SAM_CPUSEL == SAM_CPUSEL_DIV8
#define SAM_CPU_CLK (SAM_MAIN_CLK / 8)
#elif SAM_CPUSEL == SAM_CPUSEL_DIV16
#define SAM_CPU_CLK (SAM_MAIN_CLK / 16)
#elif SAM_CPUSEL == SAM_CPUSEL_DIV32
#define SAM_CPU_CLK (SAM_MAIN_CLK / 32)
#elif SAM_CPUSEL == SAM_CPUSEL_DIV64
#define SAM_CPU_CLK (SAM_MAIN_CLK / 64)
#elif SAM_CPUSEL == SAM_CPUSEL_DIV128
#define SAM_CPU_CLK (SAM_MAIN_CLK / 128)
#elif SAM_CPUSEL == SAM_CPUSEL_DIV256
#define SAM_CPU_CLK (SAM_MAIN_CLK / 256)
#else
#error "invalid SAM_CPUSEL value specified"
#endif
/* CPU clock check.*/
#if SAM_CPU_CLK > SAM_CPUCLK_MAX
#error "SAM_CPU_CLK above maximum rated frequency (SAM_CPUCLK_MAX)"
#endif
/**
* @brief PBA clock.
*/
#if (SAM_PBASEL == SAM_PBASEL_DIV1) || defined(__DOXYGEN__)
#define SAM_PBA_CLK (SAM_MAIN_CLK / 1)
#elif SAM_PBASEL == SAM_PBASEL_DIV2
#define SAM_PBA_CLK (SAM_MAIN_CLK / 2)
#elif SAM_PBASEL == SAM_PBASEL_DIV4
#define SAM_PBA_CLK (SAM_MAIN_CLK / 4)
#elif SAM_PBASEL == SAM_PBASEL_DIV8
#define SAM_PBA_CLK (SAM_MAIN_CLK / 8)
#elif SAM_PBASEL == SAM_PBASEL_DIV16
#define SAM_PBA_CLK (SAM_MAIN_CLK / 16)
#elif SAM_PBASEL == SAM_PBASEL_DIV32
#define SAM_PBA_CLK (SAM_MAIN_CLK / 32)
#elif SAM_PBASEL == SAM_PBASEL_DIV64
#define SAM_PBA_CLK (SAM_MAIN_CLK / 64)
#elif SAM_PBASEL == SAM_PBASEL_DIV128
#define SAM_PBA_CLK (SAM_MAIN_CLK / 128)
#elif SAM_PBASEL == SAM_PBASEL_DIV256
#define SAM_PBA_CLK (SAM_MAIN_CLK / 256)
#else
#error "invalid SAM_PBASEL value specified"
#endif
/* PBA clock check.*/
#if SAM_PBA_CLK > SAM_PBACLK_MAX
#error "SAM_PBA_CLK above maximum rated frequency (SAM_PBACLK_MAX)"
#endif
/**
* @brief PBB clock.
*/
#if (SAM_PBBSEL == SAM_PBBSEL_DIV1) || defined(__DOXYGEN__)
#define SAM_PBB_CLK (SAM_MAIN_CLK / 1)
#elif SAM_PBBSEL == SAM_PBBSEL_DIV2
#define SAM_PBB_CLK (SAM_MAIN_CLK / 2)
#elif SAM_PBBSEL == SAM_PBBSEL_DIV4
#define SAM_PBB_CLK (SAM_MAIN_CLK / 4)
#elif SAM_PBBSEL == SAM_PBBSEL_DIV8
#define SAM_PBB_CLK (SAM_MAIN_CLK / 8)
#elif SAM_PBBSEL == SAM_PBBSEL_DIV16
#define SAM_PBB_CLK (SAM_MAIN_CLK / 16)
#elif SAM_PBBSEL == SAM_PBBSEL_DIV32
#define SAM_PBB_CLK (SAM_MAIN_CLK / 32)
#elif SAM_PBBSEL == SAM_PBBSEL_DIV64
#define SAM_PBB_CLK (SAM_MAIN_CLK / 64)
#elif SAM_PBBSEL == SAM_PBBSEL_DIV128
#define SAM_PBB_CLK (SAM_MAIN_CLK / 128)
#elif SAM_PBBSEL == SAM_PBBSEL_DIV256
#define SAM_PBB_CLK (SAM_MAIN_CLK / 256)
#else
#error "invalid SAM_PBBSEL value specified"
#endif
/* PBB clock check.*/
#if SAM_PBB_CLK > SAM_PBBCLK_MAX
#error "SAM_PBB_CLK above maximum rated frequency (SAM_PBBCLK_MAX)"
#endif
/**
* @brief PBC clock.
*/
#if (SAM_PBCSEL == SAM_PBCSEL_DIV1) || defined(__DOXYGEN__)
#define SAM_PBC_CLK (SAM_MAIN_CLK / 1)
#elif SAM_PBCSEL == SAM_PBCSEL_DIV2
#define SAM_PBC_CLK (SAM_MAIN_CLK / 2)
#elif SAM_PBCSEL == SAM_PBCSEL_DIV4
#define SAM_PBC_CLK (SAM_MAIN_CLK / 4)
#elif SAM_PBCSEL == SAM_PBCSEL_DIV8
#define SAM_PBC_CLK (SAM_MAIN_CLK / 8)
#elif SAM_PBCSEL == SAM_PBCSEL_DIV16
#define SAM_PBC_CLK (SAM_MAIN_CLK / 16)
#elif SAM_PBCSEL == SAM_PBCSEL_DIV32
#define SAM_PBC_CLK (SAM_MAIN_CLK / 32)
#elif SAM_PBCSEL == SAM_PBCSEL_DIV64
#define SAM_PBC_CLK (SAM_MAIN_CLK / 64)
#elif SAM_PBCSEL == SAM_PBCSEL_DIV128
#define SAM_PBC_CLK (SAM_MAIN_CLK / 128)
#elif SAM_PBCSEL == SAM_PBCSEL_DIV256
#define SAM_PBC_CLK (SAM_MAIN_CLK / 256)
#else
#error "invalid SAM_PBCSEL value specified"
#endif
/* PBC clock check.*/
#if SAM_PBC_CLK > SAM_PBCCLK_MAX
#error "SAM_PBC_CLK above maximum rated frequency (SAM_PBCCLK_MAX)"
#endif
/**
* @brief PBD clock.
*/
#if (SAM_PBDSEL == SAM_PBDSEL_DIV1) || defined(__DOXYGEN__)
#define SAM_PBD_CLK (SAM_MAIN_CLK / 1)
#elif SAM_PBDSEL == SAM_PBDSEL_DIV2
#define SAM_PBD_CLK (SAM_MAIN_CLK / 2)
#elif SAM_PBDSEL == SAM_PBDSEL_DIV4
#define SAM_PBD_CLK (SAM_MAIN_CLK / 4)
#elif SAM_PBDSEL == SAM_PBDSEL_DIV8
#define SAM_PBD_CLK (SAM_MAIN_CLK / 8)
#elif SAM_PBDSEL == SAM_PBDSEL_DIV16
#define SAM_PBD_CLK (SAM_MAIN_CLK / 16)
#elif SAM_PBDSEL == SAM_PBDSEL_DIV32
#define SAM_PBD_CLK (SAM_MAIN_CLK / 32)
#elif SAM_PBDSEL == SAM_PBDSEL_DIV64
#define SAM_PBD_CLK (SAM_MAIN_CLK / 64)
#elif SAM_PBDSEL == SAM_PBDSEL_DIV128
#define SAM_PBD_CLK (SAM_MAIN_CLK / 128)
#elif SAM_PBDSEL == SAM_PBDSEL_DIV256
#define SAM_PBD_CLK (SAM_MAIN_CLK / 256)
#else
#error "invalid SAM_PBDSEL value specified"
#endif
/* PBD clock check.*/
#if SAM_PBD_CLK > SAM_PBDCLK_MAX
#error "SAM_PBD_CLK above maximum rated frequency (SAM_PBDCLK_MAX)"
#endif
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief Type representing a system clock frequency.
*/
typedef uint32_t halclock_t;
/**
* @brief Type of the realtime free counter value.
*/
typedef uint32_t halrtcnt_t;
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/**
* @brief Returns the current value of the system free running counter.
* @note This service is implemented by returning the content of the
* DWT_CYCCNT register.
*
* @return The value of the system free running counter of
* type halrtcnt_t.
*
* @notapi
*/
#define hal_lld_get_counter_value() DWT_CYCCNT
/**
* @brief Realtime counter frequency.
* @note The DWT_CYCCNT register is incremented directly by the system
* clock so this function returns STM32_HCLK.
*
* @return The realtime counter frequency of type halclock_t.
*
* @notapi
*/
#define hal_lld_get_counter_frequency() STM32_HCLK
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#ifdef __cplusplus
extern "C" {
#endif
void sam_enable_module(uint32_t bus_id, uint32_t module);
void sam_disable_module(uint32_t bus_id, uint32_t module);
void sam_clock_init(void);
void hal_lld_init(void);
#ifdef __cplusplus
}
#endif
#endif /* _HAL_LLD_H_ */
/** @} */
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