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authorAlexander <trotsenkoa@gmail.com>2022-06-29 11:03:02 +0300
committerAlexander <trotsenkoa@gmail.com>2022-06-29 11:03:02 +0300
commit1702ce6ce430a66bb7af51644b91b7c196e719d9 (patch)
tree6039acbdf047873d32aaf55969286c5f0d55958f /Libraries/FreeRTOS/portable/IAR/ARM_CM0/portasm.s
Создаю новый репозиторий. Программа для версии NixieClock_v2. Работает, часы тикают. Есть проблема, что скачет вторая сеносрная кнопка (она в другом канале). Поэтому на нее собираюсь сделать антидребезг.
Diffstat (limited to 'Libraries/FreeRTOS/portable/IAR/ARM_CM0/portasm.s')
-rw-r--r--Libraries/FreeRTOS/portable/IAR/ARM_CM0/portasm.s131
1 files changed, 131 insertions, 0 deletions
diff --git a/Libraries/FreeRTOS/portable/IAR/ARM_CM0/portasm.s b/Libraries/FreeRTOS/portable/IAR/ARM_CM0/portasm.s
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index 0000000..ec98a86
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+++ b/Libraries/FreeRTOS/portable/IAR/ARM_CM0/portasm.s
@@ -0,0 +1,131 @@
+/*
+ * FreeRTOS Kernel V10.0.1
+ * Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+#include <FreeRTOSConfig.h>
+
+ RSEG CODE:CODE(2)
+ thumb
+
+ EXTERN vPortYieldFromISR
+ EXTERN pxCurrentTCB
+ EXTERN vTaskSwitchContext
+
+ PUBLIC vSetMSP
+ PUBLIC xPortPendSVHandler
+ PUBLIC vPortSVCHandler
+ PUBLIC vPortStartFirstTask
+ PUBLIC ulSetInterruptMaskFromISR
+ PUBLIC vClearInterruptMaskFromISR
+
+/*-----------------------------------------------------------*/
+
+vSetMSP
+ msr msp, r0
+ bx lr
+
+/*-----------------------------------------------------------*/
+
+xPortPendSVHandler:
+ mrs r0, psp
+
+ ldr r3, =pxCurrentTCB /* Get the location of the current TCB. */
+ ldr r2, [r3]
+
+ subs r0, r0, #32 /* Make space for the remaining low registers. */
+ str r0, [r2] /* Save the new top of stack. */
+ stmia r0!, {r4-r7} /* Store the low registers that are not saved automatically. */
+ mov r4, r8 /* Store the high registers. */
+ mov r5, r9
+ mov r6, r10
+ mov r7, r11
+ stmia r0!, {r4-r7}
+
+ push {r3, r14}
+ cpsid i
+ bl vTaskSwitchContext
+ cpsie i
+ pop {r2, r3} /* lr goes in r3. r2 now holds tcb pointer. */
+
+ ldr r1, [r2]
+ ldr r0, [r1] /* The first item in pxCurrentTCB is the task top of stack. */
+ adds r0, r0, #16 /* Move to the high registers. */
+ ldmia r0!, {r4-r7} /* Pop the high registers. */
+ mov r8, r4
+ mov r9, r5
+ mov r10, r6
+ mov r11, r7
+
+ msr psp, r0 /* Remember the new top of stack for the task. */
+
+ subs r0, r0, #32 /* Go back for the low registers that are not automatically restored. */
+ ldmia r0!, {r4-r7} /* Pop low registers. */
+
+ bx r3
+
+/*-----------------------------------------------------------*/
+
+vPortSVCHandler;
+ /* This function is no longer used, but retained for backward
+ compatibility. */
+ bx lr
+
+/*-----------------------------------------------------------*/
+
+vPortStartFirstTask
+ /* The MSP stack is not reset as, unlike on M3/4 parts, there is no vector
+ table offset register that can be used to locate the initial stack value.
+ Not all M0 parts have the application vector table at address 0. */
+
+ ldr r3, =pxCurrentTCB /* Obtain location of pxCurrentTCB. */
+ ldr r1, [r3]
+ ldr r0, [r1] /* The first item in pxCurrentTCB is the task top of stack. */
+ adds r0, #32 /* Discard everything up to r0. */
+ msr psp, r0 /* This is now the new top of stack to use in the task. */
+ movs r0, #2 /* Switch to the psp stack. */
+ msr CONTROL, r0
+ isb
+ pop {r0-r5} /* Pop the registers that are saved automatically. */
+ mov lr, r5 /* lr is now in r5. */
+ pop {r3} /* The return address is now in r3. */
+ pop {r2} /* Pop and discard the XPSR. */
+ cpsie i /* The first task has its context and interrupts can be enabled. */
+ bx r3 /* Jump to the user defined task code. */
+
+/*-----------------------------------------------------------*/
+
+ulSetInterruptMaskFromISR
+ mrs r0, PRIMASK
+ cpsid i
+ bx lr
+
+/*-----------------------------------------------------------*/
+
+vClearInterruptMaskFromISR
+ msr PRIMASK, r0
+ bx lr
+
+ END