FreeCalypso > hg > fc-tourmaline
view src/cs/services/cst/cst_stack.c @ 51:04aaa5622fa7
disable deep sleep when Iota LEDB is on
TI's Iota chip docs say that CLK13M must be running in order for
LEDB to work, and practical experience on Mot C139 which uses
Iota LEDB for its keypad backlight concurs: if Calypso enters
deep sleep while the keypad backlight is turned on, the light
flickers visibly as the chipset goes into and out of deep sleep.
TI's original L1 sleep manager code had logic to disable deep sleep
when LT_Status() returns nonzero, but that function only works
for B-Sample and C-Sample LT, always returns 0 on BOARD 41 - no
check of Iota LEDB status anywhere. Change this code for our
current hardware: disable deep sleep when Iota LEDB has been
turned on through LLS.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Mon, 19 Oct 2020 05:11:29 +0000 |
parents | 4e78acac3d88 |
children |
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/******************************************************************************* * * CST_STACK.C * * Tasks and HISRs stacks monitoring. * * (C) Texas Instruments 2000 * ******************************************************************************/ #include <stdio.h> #include <string.h> #include "nucleus.h" #include "cs_defs.h" #include "tc_defs.h" // The following stack sizes are defined in int.s #define IRQ_STACK_SIZE 128 // Number of bytes in IRQ stack #define FIQ_STACK_SIZE 512 // Number of bytes in FIQ stack. #define SYSTEM_SIZE 1024 // Define the system stack size int vsi_o_trace (char * caller, unsigned long tclass, char * text); int vsi_t_sleep (char * caller, unsigned long tvalue); void CST_stack_trace() { int jndex, count, char_count; TC_TCB *head, *ptr; extern CS_NODE *TCD_Created_Tasks_List; extern CS_NODE *TCD_Created_HISRs_List; unsigned untouched; char *top_stack, *top, *bottom; extern char *TCT_System_Limit; char result[80]; char name[9]; vsi_o_trace("CST", 0x08, "Stack Info ..."); vsi_o_trace("CST", 0x08, " Name top bottom current untouched"); vsi_o_trace("CST", 0x08, "-------------------------------------------------"); for (jndex=0; jndex<2; jndex++) { // make use of TCB and HCB having same structure from beginning to past stack info if (jndex == 0) ptr = head = (TC_TCB *)TCD_Created_Tasks_List; else { ptr = head = (TC_TCB *)TCD_Created_HISRs_List; vsi_o_trace("CST", 0x08, "-------------------------------------------------"); } count = 0; do { untouched = 0; top_stack = (char *)ptr->tc_stack_start; while (*top_stack == 0xFE && top_stack <= (char *)ptr->tc_stack_end) { untouched++; top_stack++; } // Avoid to get a spurious character when tasks names are 8 characters long memcpy (name, ptr->tc_name, 8); name[8] = 0; sprintf(result, "%8s: %08x %08x %08x 0x%x", name, ptr->tc_stack_start, ptr->tc_stack_end, ptr->tc_stack_pointer, untouched); vsi_o_trace("CST", 0x08, result); vsi_t_sleep("",30); ptr = (TC_TCB*) ptr->tc_created.cs_next; } while (ptr != head && count++ < 50); //count is protection from infinite loops } // end of for (jndex=0; jndex<2; jndex++) // stack allocation algorithm from the int.s function INT_Initialize() // // \ \ // \----------\ // \ \ // \ \ // \ \ // \ SYSSTACK \ // \ \ // \ \ // \ \ // \----------\ // \ \ // \ IRQSTACK \ // \ \ // \----------\ // \ \ // \ \ // \ FIQSTACK \ // \ \ // \ \ // \----------\ // \ \ untouched = 0; top_stack = top = (char *)TCT_System_Limit; bottom = (char *) ((unsigned)TCT_System_Limit + SYSTEM_SIZE); while (*top_stack == 0xFE && top_stack <= bottom) { untouched++; top_stack++; } // "CST" being the current active task with its related CST_Stack, // the System Stack is unused (current sp_svc = System Stack Bottom) sprintf(result, "SYSSTACK: %08x %08x %08x 0x%x", top, bottom, bottom, // current sp_svc = System Stack Bottom untouched); vsi_o_trace("CST", 0x08, "-------------------------------------------------"); vsi_o_trace("CST", 0x08, result); vsi_t_sleep("",30); untouched = 0; top_stack = top = bottom + 4; bottom = (char *) ((unsigned)bottom + IRQ_STACK_SIZE); while (*top_stack == 0xFE && top_stack <= bottom) { untouched++; top_stack++; } // Since the processor is in supervisor mode (no IRQ & no FIQ), // current sp_irq = IRQ Stack bottom sprintf(result, "IRQSTACK: %08x %08x %08x 0x%x", top, bottom, bottom, // current sp_irq = IRQ Stack bottom untouched); vsi_o_trace("CST", 0x08, result); vsi_t_sleep("",30); untouched = 0; top_stack = top = bottom + 4; bottom = (char *) ((unsigned)bottom + FIQ_STACK_SIZE); while (*top_stack == 0xFE && top_stack <= bottom) { untouched++; top_stack++; } // Since the processor is in supervisor mode (no IRQ & no FIQ), // current sp_fiq = FIQ Stack bottom sprintf(result, "FIQSTACK: %08x %08x %08x 0x%x", top, bottom, bottom, // current sp_fiq = FIQ Stack bottom untouched); vsi_o_trace("CST", 0x08, result); vsi_o_trace("CST", 0x08, "-------------------------------------------------"); vsi_t_sleep("",30); }