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WIP simple C-based library for hacking on the watch

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This commit is contained in:
Joey Castillo
2021-04-25 22:43:47 -04:00
parent 9dda14e554
commit efd1e8a123
273 changed files with 142085 additions and 0 deletions
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143
Smol Watch Project/My Project/Device_Startup/saml22j18a_flash.ld Normal file
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/**
* \file
*
* \brief Linker script for running in internal FLASH on the SAML22J18A
*
* Copyright (c) 2018 Microchip Technology Inc.
*
* \asf_license_start
*
* \page License
*
* SPDX-License-Identifier: Apache-2.0
*
* 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 Licence 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.
*
* \asf_license_stop
*
*/
OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
OUTPUT_ARCH(arm)
SEARCH_DIR(.)
/* Memory Spaces Definitions */
MEMORY
{
rom (rx) : ORIGIN = 0x00000000, LENGTH = 0x00040000
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000
}
/* The stack size used by the application. NOTE: you need to adjust according to your application. */
STACK_SIZE = DEFINED(STACK_SIZE) ? STACK_SIZE : DEFINED(__stack_size__) ? __stack_size__ : 0x2000;
/* Section Definitions */
SECTIONS
{
.text :
{
. = ALIGN(4);
_sfixed = .;
KEEP(*(.vectors .vectors.*))
*(.text .text.* .gnu.linkonce.t.*)
*(.glue_7t) *(.glue_7)
*(.rodata .rodata* .gnu.linkonce.r.*)
*(.ARM.extab* .gnu.linkonce.armextab.*)
/* Support C constructors, and C destructors in both user code
and the C library. This also provides support for C++ code. */
. = ALIGN(4);
KEEP(*(.init))
. = ALIGN(4);
__preinit_array_start = .;
KEEP (*(.preinit_array))
__preinit_array_end = .;
. = ALIGN(4);
__init_array_start = .;
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array))
__init_array_end = .;
. = ALIGN(4);
KEEP (*crtbegin.o(.ctors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*crtend.o(.ctors))
. = ALIGN(4);
KEEP(*(.fini))
. = ALIGN(4);
__fini_array_start = .;
KEEP (*(.fini_array))
KEEP (*(SORT(.fini_array.*)))
__fini_array_end = .;
KEEP (*crtbegin.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*crtend.o(.dtors))
. = ALIGN(4);
_efixed = .; /* End of text section */
} > rom
/* .ARM.exidx is sorted, so has to go in its own output section. */
PROVIDE_HIDDEN (__exidx_start = .);
.ARM.exidx :
{
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
} > rom
PROVIDE_HIDDEN (__exidx_end = .);
. = ALIGN(4);
_etext = .;
.relocate : AT (_etext)
{
. = ALIGN(4);
_srelocate = .;
*(.ramfunc .ramfunc.*);
*(.data .data.*);
. = ALIGN(4);
_erelocate = .;
} > ram
/* .bss section which is used for uninitialized data */
.bss (NOLOAD) :
{
. = ALIGN(4);
_sbss = . ;
_szero = .;
*(.bss .bss.*)
*(COMMON)
. = ALIGN(4);
_ebss = . ;
_ezero = .;
} > ram
/* stack section */
.stack (NOLOAD):
{
. = ALIGN(8);
_sstack = .;
. = . + STACK_SIZE;
. = ALIGN(8);
_estack = .;
} > ram
. = ALIGN(4);
_end = . ;
}

142
Smol Watch Project/My Project/Device_Startup/saml22j18a_sram.ld Normal file
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/**
* \file
*
* \brief Linker script for running in internal SRAM on the SAML22J18A
*
* Copyright (c) 2018 Microchip Technology Inc.
*
* \asf_license_start
*
* \page License
*
* SPDX-License-Identifier: Apache-2.0
*
* 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 Licence 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.
*
* \asf_license_stop
*
*/
OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
OUTPUT_ARCH(arm)
SEARCH_DIR(.)
/* Memory Spaces Definitions */
MEMORY
{
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000
}
/* The stack size used by the application. NOTE: you need to adjust according to your application. */
STACK_SIZE = DEFINED(STACK_SIZE) ? STACK_SIZE : DEFINED(__stack_size__) ? __stack_size__ : 0x2000;
/* Section Definitions */
SECTIONS
{
.text :
{
. = ALIGN(4);
_sfixed = .;
KEEP(*(.vectors .vectors.*))
*(.text .text.* .gnu.linkonce.t.*)
*(.glue_7t) *(.glue_7)
*(.rodata .rodata* .gnu.linkonce.r.*)
*(.ARM.extab* .gnu.linkonce.armextab.*)
/* Support C constructors, and C destructors in both user code
and the C library. This also provides support for C++ code. */
. = ALIGN(4);
KEEP(*(.init))
. = ALIGN(4);
__preinit_array_start = .;
KEEP (*(.preinit_array))
__preinit_array_end = .;
. = ALIGN(4);
__init_array_start = .;
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array))
__init_array_end = .;
. = ALIGN(4);
KEEP (*crtbegin.o(.ctors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*crtend.o(.ctors))
. = ALIGN(4);
KEEP(*(.fini))
. = ALIGN(4);
__fini_array_start = .;
KEEP (*(.fini_array))
KEEP (*(SORT(.fini_array.*)))
__fini_array_end = .;
KEEP (*crtbegin.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*crtend.o(.dtors))
. = ALIGN(4);
_efixed = .; /* End of text section */
} > ram
/* .ARM.exidx is sorted, so has to go in its own output section. */
PROVIDE_HIDDEN (__exidx_start = .);
.ARM.exidx :
{
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
} > ram
PROVIDE_HIDDEN (__exidx_end = .);
. = ALIGN(4);
_etext = .;
.relocate : AT (_etext)
{
. = ALIGN(4);
_srelocate = .;
*(.ramfunc .ramfunc.*);
*(.data .data.*);
. = ALIGN(4);
_erelocate = .;
} > ram
/* .bss section which is used for uninitialized data */
.bss (NOLOAD) :
{
. = ALIGN(4);
_sbss = . ;
_szero = .;
*(.bss .bss.*)
*(COMMON)
. = ALIGN(4);
_ebss = . ;
_ezero = .;
} > ram
/* stack section */
.stack (NOLOAD):
{
. = ALIGN(8);
_sstack = .;
. = . + STACK_SIZE;
. = ALIGN(8);
_estack = .;
} > ram
. = ALIGN(4);
_end = . ;
}

225
Smol Watch Project/My Project/Device_Startup/startup_saml22.c Normal file
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/**
* \file
*
* \brief gcc starttup file for SAML22
*
* Copyright (c) 2018 Microchip Technology Inc.
*
* \asf_license_start
*
* \page License
*
* SPDX-License-Identifier: Apache-2.0
*
* 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 Licence 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.
*
* \asf_license_stop
*
*/
#include "saml22.h"
/* Initialize segments */
extern uint32_t _sfixed;
extern uint32_t _efixed;
extern uint32_t _etext;
extern uint32_t _srelocate;
extern uint32_t _erelocate;
extern uint32_t _szero;
extern uint32_t _ezero;
extern uint32_t _sstack;
extern uint32_t _estack;
/** \cond DOXYGEN_SHOULD_SKIP_THIS */
int main(void);
/** \endcond */
void __libc_init_array(void);
/* Default empty handler */
void Dummy_Handler(void);
/* Cortex-M0+ core handlers */
void NonMaskableInt_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void HardFault_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void SVCall_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void PendSV_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void SysTick_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
/* Peripherals handlers */
void SYSTEM_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); /* MCLK, OSC32KCTRL, OSCCTRL, PAC, PM, SUPC, TAL */
void WDT_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void RTC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void EIC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void FREQM_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
#ifdef ID_USB
void USB_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
#endif
void NVMCTRL_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void DMAC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void EVSYS_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void SERCOM0_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void SERCOM1_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void SERCOM2_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
#ifdef ID_SERCOM3
void SERCOM3_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
#endif
#ifdef ID_SERCOM4
void SERCOM4_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
#endif
#ifdef ID_SERCOM5
void SERCOM5_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
#endif
void TCC0_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void TC0_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void TC1_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void TC2_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void TC3_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void ADC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
void AC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
#ifdef ID_PTC
void PTC_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
#endif
void SLCD_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
#ifdef ID_AES
void AES_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
#endif
#ifdef ID_TRNG
void TRNG_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
#endif
/* Exception Table */
__attribute__ ((section(".vectors")))
const DeviceVectors exception_table = {
/* Configure Initial Stack Pointer, using linker-generated symbols */
.pvStack = (void*) (&_estack),
.pfnReset_Handler = (void*) Reset_Handler,
.pfnNonMaskableInt_Handler = (void*) NonMaskableInt_Handler,
.pfnHardFault_Handler = (void*) HardFault_Handler,
.pvReservedM12 = (void*) (0UL), /* Reserved */
.pvReservedM11 = (void*) (0UL), /* Reserved */
.pvReservedM10 = (void*) (0UL), /* Reserved */
.pvReservedM9 = (void*) (0UL), /* Reserved */
.pvReservedM8 = (void*) (0UL), /* Reserved */
.pvReservedM7 = (void*) (0UL), /* Reserved */
.pvReservedM6 = (void*) (0UL), /* Reserved */
.pfnSVCall_Handler = (void*) SVCall_Handler,
.pvReservedM4 = (void*) (0UL), /* Reserved */
.pvReservedM3 = (void*) (0UL), /* Reserved */
.pfnPendSV_Handler = (void*) PendSV_Handler,
.pfnSysTick_Handler = (void*) SysTick_Handler,
/* Configurable interrupts */
.pfnSYSTEM_Handler = (void*) SYSTEM_Handler, /* 0 Main Clock, 32k Oscillators Control, Oscillators Control, Peripheral Access Controller, Power Manager, Supply Controller, Trigger Allocator */
.pfnWDT_Handler = (void*) WDT_Handler, /* 1 Watchdog Timer */
.pfnRTC_Handler = (void*) RTC_Handler, /* 2 Real-Time Counter */
.pfnEIC_Handler = (void*) EIC_Handler, /* 3 External Interrupt Controller */
.pfnFREQM_Handler = (void*) FREQM_Handler, /* 4 Frequency Meter */
#ifdef ID_USB
.pfnUSB_Handler = (void*) USB_Handler, /* 5 Universal Serial Bus */
#else
.pvReserved5 = (void*) (0UL), /* 5 Reserved */
#endif
.pfnNVMCTRL_Handler = (void*) NVMCTRL_Handler, /* 6 Non-Volatile Memory Controller */
.pfnDMAC_Handler = (void*) DMAC_Handler, /* 7 Direct Memory Access Controller */
.pfnEVSYS_Handler = (void*) EVSYS_Handler, /* 8 Event System Interface */
.pfnSERCOM0_Handler = (void*) SERCOM0_Handler, /* 9 Serial Communication Interface 0 */
.pfnSERCOM1_Handler = (void*) SERCOM1_Handler, /* 10 Serial Communication Interface 1 */
.pfnSERCOM2_Handler = (void*) SERCOM2_Handler, /* 11 Serial Communication Interface 2 */
#ifdef ID_SERCOM3
.pfnSERCOM3_Handler = (void*) SERCOM3_Handler, /* 12 Serial Communication Interface 3 */
#else
.pvReserved12 = (void*) (0UL), /* 12 Reserved */
#endif
#ifdef ID_SERCOM4
.pfnSERCOM4_Handler = (void*) SERCOM4_Handler, /* 13 Serial Communication Interface 4 */
#else
.pvReserved13 = (void*) (0UL), /* 13 Reserved */
#endif
#ifdef ID_SERCOM5
.pfnSERCOM5_Handler = (void*) SERCOM5_Handler, /* 14 Serial Communication Interface 5 */
#else
.pvReserved14 = (void*) (0UL), /* 14 Reserved */
#endif
.pfnTCC0_Handler = (void*) TCC0_Handler, /* 15 Timer Counter Control */
.pfnTC0_Handler = (void*) TC0_Handler, /* 16 Basic Timer Counter 0 */
.pfnTC1_Handler = (void*) TC1_Handler, /* 17 Basic Timer Counter 1 */
.pfnTC2_Handler = (void*) TC2_Handler, /* 18 Basic Timer Counter 2 */
.pfnTC3_Handler = (void*) TC3_Handler, /* 19 Basic Timer Counter 3 */
.pfnADC_Handler = (void*) ADC_Handler, /* 20 Analog Digital Converter */
.pfnAC_Handler = (void*) AC_Handler, /* 21 Analog Comparators */
#ifdef ID_PTC
.pfnPTC_Handler = (void*) PTC_Handler, /* 22 Peripheral Touch Controller */
#else
.pvReserved22 = (void*) (0UL), /* 22 Reserved */
#endif
.pfnSLCD_Handler = (void*) SLCD_Handler, /* 23 Segment Liquid Crystal Display Controller */
#ifdef ID_AES
.pfnAES_Handler = (void*) AES_Handler, /* 24 Advanced Encryption Standard */
#else
.pvReserved24 = (void*) (0UL), /* 24 Reserved */
#endif
#ifdef ID_TRNG
.pfnTRNG_Handler = (void*) TRNG_Handler /* 25 True Random Generator */
#else
.pvReserved25 = (void*) (0UL) /* 25 Reserved */
#endif
};
/**
* \brief This is the code that gets called on processor reset.
* To initialize the device, and call the main() routine.
*/
void Reset_Handler(void)
{
uint32_t *pSrc, *pDest;
/* Initialize the relocate segment */
pSrc = &_etext;
pDest = &_srelocate;
if (pSrc != pDest) {
for (; pDest < &_erelocate;) {
*pDest++ = *pSrc++;
}
}
/* Clear the zero segment */
for (pDest = &_szero; pDest < &_ezero;) {
*pDest++ = 0;
}
/* Set the vector table base address */
pSrc = (uint32_t *) & _sfixed;
SCB->VTOR = ((uint32_t) pSrc & SCB_VTOR_TBLOFF_Msk);
/* Initialize the C library */
__libc_init_array();
/* Branch to main function */
main();
/* Infinite loop */
while (1);
}
/**
* \brief Default interrupt handler for unused IRQs.
*/
void Dummy_Handler(void)
{
while (1) {
}
}

64
Smol Watch Project/My Project/Device_Startup/system_saml22.c Normal file
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/**
* \file
*
* \brief Low-level initialization functions called upon chip startup.
*
* Copyright (c) 2018 Microchip Technology Inc.
*
* \asf_license_start
*
* \page License
*
* SPDX-License-Identifier: Apache-2.0
*
* 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 Licence 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.
*
* \asf_license_stop
*
*/
#include "saml22.h"
/**
* Initial system clock frequency. The System RC Oscillator (RCSYS) provides
* the source for the main clock at chip startup.
*/
#define __SYSTEM_CLOCK (1000000)
uint32_t SystemCoreClock = __SYSTEM_CLOCK;/*!< System Clock Frequency (Core Clock)*/
/**
* Initialize the system
*
* @brief Setup the microcontroller system.
* Initialize the System and update the SystemCoreClock variable.
*/
void SystemInit(void)
{
// Keep the default device state after reset
SystemCoreClock = __SYSTEM_CLOCK;
return;
}
/**
* Update SystemCoreClock variable
*
* @brief Updates the SystemCoreClock with current core Clock
* retrieved from cpu registers.
*/
void SystemCoreClockUpdate(void)
{
// Not implemented
SystemCoreClock = __SYSTEM_CLOCK;
return;
}