K20 uVision files, ld NVIC offset

- K20 KEIL files
	- clock set to 1 (48MHz)
	- offset in GCC ld for vectors in RAM
	- us ticker - PIT timer interrupt implementation
pull/135/head
0xc0170 2013-11-19 20:06:26 +01:00
parent 8ca8014c00
commit 4e09b52a71
8 changed files with 733 additions and 18 deletions

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@ -0,0 +1,14 @@
LR_IROM1 0x00000000 0x20000 { ; load region size_region (132k)
ER_IROM1 0x00000000 0x20000 { ; load address = execution address
*.o (RESET, +First)
*(InRoot$$Sections)
.ANY (+RO)
}
; 8_byte_aligned(61 vect * 4 bytes) = 8_byte_aligned(0xF4) = 0xF8
; 0x4000 - 0xF8 = 0x3F08
RW_IRAM1 0x1FFFE0F8 0x3F08 {
.ANY (+RW +ZI)
}
}

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@ -0,0 +1,654 @@
;/*****************************************************************************
; * @file: startup_MK20D5.s
; * @purpose: CMSIS Cortex-M4 Core Device Startup File for the
; * MK20D5
; * @version: 1.0
; * @date: 2011-12-15
; *
; * Copyright: 1997 - 2012 Freescale Semiconductor, Inc. All Rights Reserved.
;*
; *------- <<< Use Configuration Wizard in Context Menu >>> ------------------
; *
; *****************************************************************************/
; <h> Stack Configuration
; <o> Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
; </h>
Stack_Size EQU 0x00000400
AREA STACK, NOINIT, READWRITE, ALIGN=3
Stack_Mem SPACE Stack_Size
__initial_sp
; <h> Heap Configuration
; <o> Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
; </h>
Heap_Size EQU 0x00000000
AREA HEAP, NOINIT, READWRITE, ALIGN=3
__heap_base
Heap_Mem SPACE Heap_Size
__heap_limit
PRESERVE8
THUMB
; Vector Table Mapped to Address 0 at Reset
AREA RESET, DATA, READONLY
EXPORT __Vectors
EXPORT __Vectors_End
EXPORT __Vectors_Size
__Vectors DCD __initial_sp ; Top of Stack
DCD Reset_Handler ; Reset Handler
DCD NMI_Handler ; NMI Handler
DCD HardFault_Handler ; Hard Fault Handler
DCD MemManage_Handler ; MPU Fault Handler
DCD BusFault_Handler ; Bus Fault Handler
DCD UsageFault_Handler ; Usage Fault Handler
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD SVC_Handler ; SVCall Handler
DCD DebugMon_Handler ; Debug Monitor Handler
DCD 0 ; Reserved
DCD PendSV_Handler ; PendSV Handler
DCD SysTick_Handler ; SysTick Handler
; External Interrupts
DCD DMA0_IRQHandler ; DMA channel 0 transfer complete interrupt
DCD DMA1_IRQHandler ; DMA channel 1 transfer complete interrupt
DCD DMA2_IRQHandler ; DMA channel 2 transfer complete interrupt
DCD DMA3_IRQHandler ; DMA channel 3 transfer complete interrupt
DCD DMA_Error_IRQHandler ; DMA error interrupt
DCD Reserved21_IRQHandler ; Reserved interrupt 21
DCD FTFL_IRQHandler ; FTFL interrupt
DCD Read_Collision_IRQHandler ; Read collision interrupt
DCD LVD_LVW_IRQHandler ; Low Voltage Detect, Low Voltage Warning
DCD LLW_IRQHandler ; Low Leakage Wakeup
DCD Watchdog_IRQHandler ; WDOG interrupt
DCD I2C0_IRQHandler ; I2C0 interrupt
DCD SPI0_IRQHandler ; SPI0 interrupt
DCD I2S0_Tx_IRQHandler ; I2S0 transmit interrupt
DCD I2S0_Rx_IRQHandler ; I2S0 receive interrupt
DCD UART0_LON_IRQHandler ; UART0 LON interrupt
DCD UART0_RX_TX_IRQHandler ; UART0 receive/transmit interrupt
DCD UART0_ERR_IRQHandler ; UART0 error interrupt
DCD UART1_RX_TX_IRQHandler ; UART1 receive/transmit interrupt
DCD UART1_ERR_IRQHandler ; UART1 error interrupt
DCD UART2_RX_TX_IRQHandler ; UART2 receive/transmit interrupt
DCD UART2_ERR_IRQHandler ; UART2 error interrupt
DCD ADC0_IRQHandler ; ADC0 interrupt
DCD CMP0_IRQHandler ; CMP0 interrupt
DCD CMP1_IRQHandler ; CMP1 interrupt
DCD FTM0_IRQHandler ; FTM0 fault, overflow and channels interrupt
DCD FTM1_IRQHandler ; FTM1 fault, overflow and channels interrupt
DCD CMT_IRQHandler ; CMT interrupt
DCD RTC_IRQHandler ; RTC interrupt
DCD RTC_Seconds_IRQHandler ; RTC seconds interrupt
DCD PIT0_IRQHandler ; PIT timer channel 0 interrupt
DCD PIT1_IRQHandler ; PIT timer channel 1 interrupt
DCD PIT2_IRQHandler ; PIT timer channel 2 interrupt
DCD PIT3_IRQHandler ; PIT timer channel 3 interrupt
DCD PDB0_IRQHandler ; PDB0 interrupt
DCD USB0_IRQHandler ; USB0 interrupt
DCD USBDCD_IRQHandler ; USBDCD interrupt
DCD TSI0_IRQHandler ; TSI0 interrupt
DCD MCG_IRQHandler ; MCG interrupt
DCD LPTimer_IRQHandler ; LPTimer interrupt
DCD PORTA_IRQHandler ; Port A interrupt
DCD PORTB_IRQHandler ; Port B interrupt
DCD PORTC_IRQHandler ; Port C interrupt
DCD PORTD_IRQHandler ; Port D interrupt
DCD PORTE_IRQHandler ; Port E interrupt
DCD SWI_IRQHandler ; Software interrupt
DCD DefaultISR ; 62
DCD DefaultISR ; 63
DCD DefaultISR ; 64
DCD DefaultISR ; 65
DCD DefaultISR ; 66
DCD DefaultISR ; 67
DCD DefaultISR ; 68
DCD DefaultISR ; 69
DCD DefaultISR ; 70
DCD DefaultISR ; 71
DCD DefaultISR ; 72
DCD DefaultISR ; 73
DCD DefaultISR ; 74
DCD DefaultISR ; 75
DCD DefaultISR ; 76
DCD DefaultISR ; 77
DCD DefaultISR ; 78
DCD DefaultISR ; 79
DCD DefaultISR ; 80
DCD DefaultISR ; 81
DCD DefaultISR ; 82
DCD DefaultISR ; 83
DCD DefaultISR ; 84
DCD DefaultISR ; 85
DCD DefaultISR ; 86
DCD DefaultISR ; 87
DCD DefaultISR ; 88
DCD DefaultISR ; 89
DCD DefaultISR ; 90
DCD DefaultISR ; 91
DCD DefaultISR ; 92
DCD DefaultISR ; 93
DCD DefaultISR ; 94
DCD DefaultISR ; 95
DCD DefaultISR ; 96
DCD DefaultISR ; 97
DCD DefaultISR ; 98
DCD DefaultISR ; 99
DCD DefaultISR ; 100
DCD DefaultISR ; 101
DCD DefaultISR ; 102
DCD DefaultISR ; 103
DCD DefaultISR ; 104
DCD DefaultISR ; 105
DCD DefaultISR ; 106
DCD DefaultISR ; 107
DCD DefaultISR ; 108
DCD DefaultISR ; 109
DCD DefaultISR ; 110
DCD DefaultISR ; 111
DCD DefaultISR ; 112
DCD DefaultISR ; 113
DCD DefaultISR ; 114
DCD DefaultISR ; 115
DCD DefaultISR ; 116
DCD DefaultISR ; 117
DCD DefaultISR ; 118
DCD DefaultISR ; 119
DCD DefaultISR ; 120
DCD DefaultISR ; 121
DCD DefaultISR ; 122
DCD DefaultISR ; 123
DCD DefaultISR ; 124
DCD DefaultISR ; 125
DCD DefaultISR ; 126
DCD DefaultISR ; 127
DCD DefaultISR ; 128
DCD DefaultISR ; 129
DCD DefaultISR ; 130
DCD DefaultISR ; 131
DCD DefaultISR ; 132
DCD DefaultISR ; 133
DCD DefaultISR ; 134
DCD DefaultISR ; 135
DCD DefaultISR ; 136
DCD DefaultISR ; 137
DCD DefaultISR ; 138
DCD DefaultISR ; 139
DCD DefaultISR ; 140
DCD DefaultISR ; 141
DCD DefaultISR ; 142
DCD DefaultISR ; 143
DCD DefaultISR ; 144
DCD DefaultISR ; 145
DCD DefaultISR ; 146
DCD DefaultISR ; 147
DCD DefaultISR ; 148
DCD DefaultISR ; 149
DCD DefaultISR ; 150
DCD DefaultISR ; 151
DCD DefaultISR ; 152
DCD DefaultISR ; 153
DCD DefaultISR ; 154
DCD DefaultISR ; 155
DCD DefaultISR ; 156
DCD DefaultISR ; 157
DCD DefaultISR ; 158
DCD DefaultISR ; 159
DCD DefaultISR ; 160
DCD DefaultISR ; 161
DCD DefaultISR ; 162
DCD DefaultISR ; 163
DCD DefaultISR ; 164
DCD DefaultISR ; 165
DCD DefaultISR ; 166
DCD DefaultISR ; 167
DCD DefaultISR ; 168
DCD DefaultISR ; 169
DCD DefaultISR ; 170
DCD DefaultISR ; 171
DCD DefaultISR ; 172
DCD DefaultISR ; 173
DCD DefaultISR ; 174
DCD DefaultISR ; 175
DCD DefaultISR ; 176
DCD DefaultISR ; 177
DCD DefaultISR ; 178
DCD DefaultISR ; 179
DCD DefaultISR ; 180
DCD DefaultISR ; 181
DCD DefaultISR ; 182
DCD DefaultISR ; 183
DCD DefaultISR ; 184
DCD DefaultISR ; 185
DCD DefaultISR ; 186
DCD DefaultISR ; 187
DCD DefaultISR ; 188
DCD DefaultISR ; 189
DCD DefaultISR ; 190
DCD DefaultISR ; 191
DCD DefaultISR ; 192
DCD DefaultISR ; 193
DCD DefaultISR ; 194
DCD DefaultISR ; 195
DCD DefaultISR ; 196
DCD DefaultISR ; 197
DCD DefaultISR ; 198
DCD DefaultISR ; 199
DCD DefaultISR ; 200
DCD DefaultISR ; 201
DCD DefaultISR ; 202
DCD DefaultISR ; 203
DCD DefaultISR ; 204
DCD DefaultISR ; 205
DCD DefaultISR ; 206
DCD DefaultISR ; 207
DCD DefaultISR ; 208
DCD DefaultISR ; 209
DCD DefaultISR ; 210
DCD DefaultISR ; 211
DCD DefaultISR ; 212
DCD DefaultISR ; 213
DCD DefaultISR ; 214
DCD DefaultISR ; 215
DCD DefaultISR ; 216
DCD DefaultISR ; 217
DCD DefaultISR ; 218
DCD DefaultISR ; 219
DCD DefaultISR ; 220
DCD DefaultISR ; 221
DCD DefaultISR ; 222
DCD DefaultISR ; 223
DCD DefaultISR ; 224
DCD DefaultISR ; 225
DCD DefaultISR ; 226
DCD DefaultISR ; 227
DCD DefaultISR ; 228
DCD DefaultISR ; 229
DCD DefaultISR ; 230
DCD DefaultISR ; 231
DCD DefaultISR ; 232
DCD DefaultISR ; 233
DCD DefaultISR ; 234
DCD DefaultISR ; 235
DCD DefaultISR ; 236
DCD DefaultISR ; 237
DCD DefaultISR ; 238
DCD DefaultISR ; 239
DCD DefaultISR ; 240
DCD DefaultISR ; 241
DCD DefaultISR ; 242
DCD DefaultISR ; 243
DCD DefaultISR ; 244
DCD DefaultISR ; 245
DCD DefaultISR ; 246
DCD DefaultISR ; 247
DCD DefaultISR ; 248
DCD DefaultISR ; 249
DCD DefaultISR ; 250
DCD DefaultISR ; 251
DCD DefaultISR ; 252
DCD DefaultISR ; 253
DCD DefaultISR ; 254
DCD DefaultISR ; 255
__Vectors_End
__Vectors_Size EQU __Vectors_End - __Vectors
; <h> Flash Configuration
; <i> 16-byte flash configuration field that stores default protection settings (loaded on reset)
; <i> and security information that allows the MCU to restrict acces to the FTFL module.
; <h> Backdoor Comparison Key
; <o0> Backdoor Key 0 <0x0-0xFF:2>
; <o1> Backdoor Key 1 <0x0-0xFF:2>
; <o2> Backdoor Key 2 <0x0-0xFF:2>
; <o3> Backdoor Key 3 <0x0-0xFF:2>
; <o4> Backdoor Key 4 <0x0-0xFF:2>
; <o5> Backdoor Key 5 <0x0-0xFF:2>
; <o6> Backdoor Key 6 <0x0-0xFF:2>
; <o7> Backdoor Key 7 <0x0-0xFF:2>
BackDoorK0 EQU 0xFF
BackDoorK1 EQU 0xFF
BackDoorK2 EQU 0xFF
BackDoorK3 EQU 0xFF
BackDoorK4 EQU 0xFF
BackDoorK5 EQU 0xFF
BackDoorK6 EQU 0xFF
BackDoorK7 EQU 0xFF
; </h>
; <h> Program flash protection bytes (FPROT)
; <i> Each program flash region can be protected from program and erase operation by setting the associated PROT bit.
; <i> Each bit protects a 1/32 region of the program flash memory.
; <h> FPROT0
; <i> Program flash protection bytes
; <i> 1/32 - 8/32 region
; <o.0> FPROT0.0
; <o.1> FPROT0.1
; <o.2> FPROT0.2
; <o.3> FPROT0.3
; <o.4> FPROT0.4
; <o.5> FPROT0.5
; <o.6> FPROT0.6
; <o.7> FPROT0.7
nFPROT0 EQU 0x00
FPROT0 EQU nFPROT0:EOR:0xFF
; </h>
; <h> FPROT1
; <i> Program Flash Region Protect Register 1
; <i> 9/32 - 16/32 region
; <o.0> FPROT1.0
; <o.1> FPROT1.1
; <o.2> FPROT1.2
; <o.3> FPROT1.3
; <o.4> FPROT1.4
; <o.5> FPROT1.5
; <o.6> FPROT1.6
; <o.7> FPROT1.7
nFPROT1 EQU 0x00
FPROT1 EQU nFPROT1:EOR:0xFF
; </h>
; <h> FPROT2
; <i> Program Flash Region Protect Register 2
; <i> 17/32 - 24/32 region
; <o.0> FPROT2.0
; <o.1> FPROT2.1
; <o.2> FPROT2.2
; <o.3> FPROT2.3
; <o.4> FPROT2.4
; <o.5> FPROT2.5
; <o.6> FPROT2.6
; <o.7> FPROT2.7
nFPROT2 EQU 0x00
FPROT2 EQU nFPROT2:EOR:0xFF
; </h>
; <h> FPROT3
; <i> Program Flash Region Protect Register 3
; <i> 25/32 - 32/32 region
; <o.0> FPROT3.0
; <o.1> FPROT3.1
; <o.2> FPROT3.2
; <o.3> FPROT3.3
; <o.4> FPROT3.4
; <o.5> FPROT3.5
; <o.6> FPROT3.6
; <o.7> FPROT3.7
nFPROT3 EQU 0x00
FPROT3 EQU nFPROT3:EOR:0xFF
; </h>
; </h>
; <h> Data flash protection byte (FDPROT)
; <i> Each bit protects a 1/8 region of the data flash memory.
; <i> (Program flash only devices: Reserved)
; <o.0> FDPROT.0
; <o.1> FDPROT.1
; <o.2> FDPROT.2
; <o.3> FDPROT.3
; <o.4> FDPROT.4
; <o.5> FDPROT.5
; <o.6> FDPROT.6
; <o.7> FDPROT.7
nFDPROT EQU 0x00
FDPROT EQU nFDPROT:EOR:0xFF
; </h>
; <h> EEPROM protection byte (FEPROT)
; <i> FlexNVM devices: Each bit protects a 1/8 region of the EEPROM.
; <i> (Program flash only devices: Reserved)
; <o.0> FEPROT.0
; <o.1> FEPROT.1
; <o.2> FEPROT.2
; <o.3> FEPROT.3
; <o.4> FEPROT.4
; <o.5> FEPROT.5
; <o.6> FEPROT.6
; <o.7> FEPROT.7
nFEPROT EQU 0x00
FEPROT EQU nFEPROT:EOR:0xFF
; </h>
; <h> Flash nonvolatile option byte (FOPT)
; <i> Allows the user to customize the operation of the MCU at boot time.
; <o.0> LPBOOT
; <0=> Low-power boot
; <1=> normal boot
; <o.1> EZPORT_DIS
; <0=> EzPort operation is enabled
; <1=> EzPort operation is disabled
FOPT EQU 0xFF
; </h>
; <h> Flash security byte (FSEC)
; <i> WARNING: If SEC field is configured as "MCU security status is secure" and MEEN field is configured as "Mass erase is disabled",
; <i> MCU's security status cannot be set back to unsecure state since Mass erase via the debugger is blocked !!!
; <o.0..1> SEC
; <2=> MCU security status is unsecure
; <3=> MCU security status is secure
; <i> Flash Security
; <i> This bits define the security state of the MCU.
; <o.2..3> FSLACC
; <2=> Freescale factory access denied
; <3=> Freescale factory access granted
; <i> Freescale Failure Analysis Access Code
; <i> This bits define the security state of the MCU.
; <o.4..5> MEEN
; <2=> Mass erase is disabled
; <3=> Mass erase is enabled
; <i> Mass Erase Enable Bits
; <i> Enables and disables mass erase capability of the FTFL module
; <o.6..7> KEYEN
; <2=> Backdoor key access enabled
; <3=> Backdoor key access disabled
; <i> Backdoor key Security Enable
; <i> These bits enable and disable backdoor key access to the FTFL module.
FSEC EQU 0xFE
; </h>
; </h>
IF :LNOT::DEF:RAM_TARGET
AREA |.ARM.__at_0x400|, CODE, READONLY
DCB BackDoorK0, BackDoorK1, BackDoorK2, BackDoorK3
DCB BackDoorK4, BackDoorK5, BackDoorK6, BackDoorK7
DCB FPROT0, FPROT1, FPROT2, FPROT3
DCB FSEC, FOPT, FEPROT, FDPROT
ENDIF
AREA |.text|, CODE, READONLY
; Reset Handler
Reset_Handler PROC
EXPORT Reset_Handler [WEAK]
IMPORT SystemInit
IMPORT __main
LDR R0, =SystemInit
BLX R0
LDR R0, =__main
BX R0
ENDP
; Dummy Exception Handlers (infinite loops which can be modified)
NMI_Handler PROC
EXPORT NMI_Handler [WEAK]
B .
ENDP
HardFault_Handler\
PROC
EXPORT HardFault_Handler [WEAK]
B .
ENDP
MemManage_Handler\
PROC
EXPORT MemManage_Handler [WEAK]
B .
ENDP
BusFault_Handler\
PROC
EXPORT BusFault_Handler [WEAK]
B .
ENDP
UsageFault_Handler\
PROC
EXPORT UsageFault_Handler [WEAK]
B .
ENDP
SVC_Handler PROC
EXPORT SVC_Handler [WEAK]
B .
ENDP
DebugMon_Handler\
PROC
EXPORT DebugMon_Handler [WEAK]
B .
ENDP
PendSV_Handler PROC
EXPORT PendSV_Handler [WEAK]
B .
ENDP
SysTick_Handler PROC
EXPORT SysTick_Handler [WEAK]
B .
ENDP
Default_Handler PROC
EXPORT DMA0_IRQHandler [WEAK]
EXPORT DMA1_IRQHandler [WEAK]
EXPORT DMA2_IRQHandler [WEAK]
EXPORT DMA3_IRQHandler [WEAK]
EXPORT DMA_Error_IRQHandler [WEAK]
EXPORT Reserved21_IRQHandler [WEAK]
EXPORT FTFL_IRQHandler [WEAK]
EXPORT Read_Collision_IRQHandler [WEAK]
EXPORT LVD_LVW_IRQHandler [WEAK]
EXPORT LLW_IRQHandler [WEAK]
EXPORT Watchdog_IRQHandler [WEAK]
EXPORT I2C0_IRQHandler [WEAK]
EXPORT SPI0_IRQHandler [WEAK]
EXPORT I2S0_Tx_IRQHandler [WEAK]
EXPORT I2S0_Rx_IRQHandler [WEAK]
EXPORT UART0_LON_IRQHandler [WEAK]
EXPORT UART0_RX_TX_IRQHandler [WEAK]
EXPORT UART0_ERR_IRQHandler [WEAK]
EXPORT UART1_RX_TX_IRQHandler [WEAK]
EXPORT UART1_ERR_IRQHandler [WEAK]
EXPORT UART2_RX_TX_IRQHandler [WEAK]
EXPORT UART2_ERR_IRQHandler [WEAK]
EXPORT ADC0_IRQHandler [WEAK]
EXPORT CMP0_IRQHandler [WEAK]
EXPORT CMP1_IRQHandler [WEAK]
EXPORT FTM0_IRQHandler [WEAK]
EXPORT FTM1_IRQHandler [WEAK]
EXPORT CMT_IRQHandler [WEAK]
EXPORT RTC_IRQHandler [WEAK]
EXPORT RTC_Seconds_IRQHandler [WEAK]
EXPORT PIT0_IRQHandler [WEAK]
EXPORT PIT1_IRQHandler [WEAK]
EXPORT PIT2_IRQHandler [WEAK]
EXPORT PIT3_IRQHandler [WEAK]
EXPORT PDB0_IRQHandler [WEAK]
EXPORT USB0_IRQHandler [WEAK]
EXPORT USBDCD_IRQHandler [WEAK]
EXPORT TSI0_IRQHandler [WEAK]
EXPORT MCG_IRQHandler [WEAK]
EXPORT LPTimer_IRQHandler [WEAK]
EXPORT PORTA_IRQHandler [WEAK]
EXPORT PORTB_IRQHandler [WEAK]
EXPORT PORTC_IRQHandler [WEAK]
EXPORT PORTD_IRQHandler [WEAK]
EXPORT PORTE_IRQHandler [WEAK]
EXPORT SWI_IRQHandler [WEAK]
EXPORT DefaultISR [WEAK]
DMA0_IRQHandler
DMA1_IRQHandler
DMA2_IRQHandler
DMA3_IRQHandler
DMA_Error_IRQHandler
Reserved21_IRQHandler
FTFL_IRQHandler
Read_Collision_IRQHandler
LVD_LVW_IRQHandler
LLW_IRQHandler
Watchdog_IRQHandler
I2C0_IRQHandler
SPI0_IRQHandler
I2S0_Tx_IRQHandler
I2S0_Rx_IRQHandler
UART0_LON_IRQHandler
UART0_RX_TX_IRQHandler
UART0_ERR_IRQHandler
UART1_RX_TX_IRQHandler
UART1_ERR_IRQHandler
UART2_RX_TX_IRQHandler
UART2_ERR_IRQHandler
ADC0_IRQHandler
CMP0_IRQHandler
CMP1_IRQHandler
FTM0_IRQHandler
FTM1_IRQHandler
CMT_IRQHandler
RTC_IRQHandler
RTC_Seconds_IRQHandler
PIT0_IRQHandler
PIT1_IRQHandler
PIT2_IRQHandler
PIT3_IRQHandler
PDB0_IRQHandler
USB0_IRQHandler
USBDCD_IRQHandler
TSI0_IRQHandler
MCG_IRQHandler
LPTimer_IRQHandler
PORTA_IRQHandler
PORTB_IRQHandler
PORTC_IRQHandler
PORTD_IRQHandler
PORTE_IRQHandler
SWI_IRQHandler
DefaultISR
B .
ENDP
ALIGN
; User Initial Stack & Heap
IF :DEF:__MICROLIB
EXPORT __initial_sp
EXPORT __heap_base
EXPORT __heap_limit
ELSE
IMPORT __use_two_region_memory
EXPORT __user_initial_stackheap
__user_initial_stackheap
LDR R0, = Heap_Mem
LDR R1, =(Stack_Mem + Stack_Size)
LDR R2, = (Heap_Mem + Heap_Size)
LDR R3, = Stack_Mem
BX LR
ALIGN
ENDIF
END

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@ -0,0 +1,31 @@
/* mbed Microcontroller Library - stackheap
* Copyright (C) 2009-2011 ARM Limited. All rights reserved.
*
* Setup a fixed single stack/heap memory model,
* between the top of the RW/ZI region and the stackpointer
*/
#ifdef __cplusplus
extern "C" {
#endif
#include <rt_misc.h>
#include <stdint.h>
extern char Image$$RW_IRAM1$$ZI$$Limit[];
extern __value_in_regs struct __initial_stackheap __user_setup_stackheap(uint32_t R0, uint32_t R1, uint32_t R2, uint32_t R3) {
uint32_t zi_limit = (uint32_t)Image$$RW_IRAM1$$ZI$$Limit;
uint32_t sp_limit = __current_sp();
zi_limit = (zi_limit + 7) & ~0x7; // ensure zi_limit is 8-byte aligned
struct __initial_stackheap r;
r.heap_base = zi_limit;
r.heap_limit = sp_limit;
return r;
}
#ifdef __cplusplus
}
#endif

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@ -1,5 +1,5 @@
/* /*
* KL25Z ARM GCC linker script file * K20 ARM GCC linker script file
*/ */
MEMORY MEMORY
@ -7,7 +7,7 @@ MEMORY
VECTORS (rx) : ORIGIN = 0x00000000, LENGTH = 0x00000400 VECTORS (rx) : ORIGIN = 0x00000000, LENGTH = 0x00000400
FLASH_PROTECTION (rx) : ORIGIN = 0x00000400, LENGTH = 0x00000010 FLASH_PROTECTION (rx) : ORIGIN = 0x00000400, LENGTH = 0x00000010
FLASH (rx) : ORIGIN = 0x00000410, LENGTH = 128K - 0x00000410 FLASH (rx) : ORIGIN = 0x00000410, LENGTH = 128K - 0x00000410
RAM (rwx) : ORIGIN = 0x1FFFE000, LENGTH = 16K RAM (rwx) : ORIGIN = 0x1FFFE0F8, LENGTH = 16K - 0xC8
} }
/* Linker script to place sections and symbol values. Should be used together /* Linker script to place sections and symbol values. Should be used together

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@ -211,4 +211,15 @@ Reset_Handler:
def_irq_handler CPU_CLCD_IRQHandler def_irq_handler CPU_CLCD_IRQHandler
def_irq_handler SPI_IRQHandler def_irq_handler SPI_IRQHandler
/* Flash protection region, placed at 0x400 */
.text
.thumb
.align 2
.section .kinetis_flash_config_field,"a",%progbits
kinetis_flash_config:
.long 0xffffffff
.long 0xffffffff
.long 0xffffffff
.long 0xfffffffe
.end .end

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@ -44,7 +44,7 @@
#define DISABLE_WDOG 1 #define DISABLE_WDOG 1
#define CLOCK_SETUP 0 #define CLOCK_SETUP 1
/* Predefined clock setups /* Predefined clock setups
0 ... Multipurpose Clock Generator (MCG) in FLL Engaged Internal (FEI) mode 0 ... Multipurpose Clock Generator (MCG) in FLL Engaged Internal (FEI) mode
Reference clock source for MCG module is the slow internal clock source 32.768kHz Reference clock source for MCG module is the slow internal clock source 32.768kHz

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@ -30,6 +30,14 @@ void us_ticker_init(void) {
lptmr_init(); lptmr_init();
} }
static uint32_t pit_us_ticker_counter = 0;
void pit0_isr(void) {
pit_us_ticker_counter++;
PIT->CHANNEL[0].LDVAL = 48; // 1us
PIT->CHANNEL[0].TFLG = 1;
}
/****************************************************************************** /******************************************************************************
* Timer for us timing. * Timer for us timing.
******************************************************************************/ ******************************************************************************/
@ -37,22 +45,19 @@ static void pit_init(void) {
SIM->SCGC6 |= SIM_SCGC6_PIT_MASK; // Clock PIT SIM->SCGC6 |= SIM_SCGC6_PIT_MASK; // Clock PIT
PIT->MCR = 0; // Enable PIT PIT->MCR = 0; // Enable PIT
// Channel 1 PIT->CHANNEL[0].LDVAL = 48; // 1us
PIT->CHANNEL[1].LDVAL = 0xFFFFFFFF; PIT->CHANNEL[0].TCTRL |= PIT_TCTRL_TIE_MASK;
PIT->CHANNEL[1].TCTRL = PIT_TCTRL_TIE_MASK; // Chain to timer 0, disable Interrupts PIT->CHANNEL[0].TCTRL |= PIT_TCTRL_TEN_MASK; // Start timer 1
PIT->CHANNEL[1].TCTRL |= PIT_TCTRL_TEN_MASK; // Start timer 1
// Use channel 0 as a prescaler for channel 1 NVIC_SetVector(PIT0_IRQn, (uint32_t)pit0_isr);
PIT->CHANNEL[0].LDVAL = 23; NVIC_EnableIRQ(PIT0_IRQn);
PIT->CHANNEL[0].TCTRL = PIT_TCTRL_TEN_MASK; // Start timer 0, disable interrupts
} }
uint32_t us_ticker_read() { uint32_t us_ticker_read() {
if (!us_ticker_inited) if (!us_ticker_inited)
us_ticker_init(); us_ticker_init();
// The PIT is a countdown timer return pit_us_ticker_counter;
return ~(PIT->CHANNEL[1].CVAL);
} }
/****************************************************************************** /******************************************************************************

View File

@ -140,7 +140,7 @@ class K20D5M(Target):
self.extra_labels = ['Freescale'] self.extra_labels = ['Freescale']
self.supported_toolchains = ["GCC_ARM"] self.supported_toolchains = ["GCC_ARM", "ARM"]
self.is_disk_virtual = True self.is_disk_virtual = True