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add scratchpad region save and restore

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This commit is contained in:
optixx 2009-08-24 20:53:14 +02:00
parent 98ac61c91d
commit ee9b377698
4 changed files with 63 additions and 7 deletions
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5
avr/usbload/Makefile
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@ -62,11 +62,8 @@ help:
@echo "make clean ..... to delete objects and hex file"
hex: main.hex
@echo "==============================="
@echo "$(TARGET) compiled for: $(DEVICE)"
@echo -n "size is: "
@$(SIZE) -A $(TARGET).hex | grep "\.sec1" | tr -s " " | cut -d" " -f2
@echo "==============================="
@./checksize $(TARGET).elf
program: flash fuse

6
avr/usbload/checksize Normal file → Executable file
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@ -5,11 +5,11 @@
# Creation Date: 2004-12-29
# Tabsize: 4
# Copyright: (c) 2005 OBJECTIVE DEVELOPMENT Software GmbH.
# Revision: $Id: checksize 83 2006-01-05 22:20:53Z cs $
# Revision: $:Id: checksize 83 2006-01-05 22:20:53Z cs $
error=0
codelimit=16384 # default value
datalimit=992 # default value; leave 32 bytes for stack
codelimit=65536 # default value
datalimit=4064 # default value; leave 32 bytes for stack
if [ $# -gt 1 ]; then
codelimit="$2"

52
avr/usbload/shared_memory.c
View File

@ -38,6 +38,52 @@ uint8_t scratchpad_state;
uint8_t scratchpad_cmd;
uint8_t scratchpad_payload;
uint8_t scratchpad_region_rx[SHARED_MEM_RX_LOC_SIZE];
uint8_t scratchpad_region_tx[SHARED_MEM_TX_LOC_SIZE];
uint8_t scratchpad_locked_rx = 1;
uint8_t scratchpad_locked_tx = 1;
void shared_memory_scratchpad_region_saye_helper(uint32_t addr){
if(addr > (SHARED_MEM_TX_LOC_STATE + SHARED_MEM_TX_LOC_SIZE ))
shared_memory_scratchpad_region_tx_save();
if(addr > (SHARED_MEM_RX_LOC_STATE + SHARED_MEM_RX_LOC_SIZE ))
shared_memory_scratchpad_region_rx_save();
}
void shared_memory_scratchpad_region_tx_save()
{
debug(DEBUG_SHM,"shared_memory_scratchpad_region_tx_save: unlock\n");
sram_bulk_read_buffer(SHARED_MEM_TX_LOC_STATE,scratchpad_region_tx,SHARED_MEM_TX_LOC_SIZE);
scratchpad_locked_tx = 0;
}
void shared_memory_scratchpad_region_tx_restore()
{
debug(DEBUG_SHM,"shared_memory_scratchpad_region_tx_restore: lock\n");
sram_bulk_copy(SHARED_MEM_TX_LOC_STATE,scratchpad_region_tx,SHARED_MEM_TX_LOC_SIZE);
scratchpad_locked_tx = 1;
}
void shared_memory_scratchpad_region_rx_save()
{
debug(DEBUG_SHM,"shared_memory_scratchpad_region_rx_save: unlock\n");
sram_bulk_read_buffer(SHARED_MEM_RX_LOC_STATE,scratchpad_region_rx,SHARED_MEM_RX_LOC_SIZE);
scratchpad_locked_rx = 0;
}
void shared_memory_scratchpad_region_rx_restore()
{
debug(DEBUG_SHM,"shared_memory_scratchpad_region_tx_save: lock\n");
sram_bulk_copy(SHARED_MEM_RX_LOC_STATE,scratchpad_region_rx,SHARED_MEM_RX_LOC_SIZE);
scratchpad_locked_rx = 1;
}
void shared_memory_scratchpad_tx_save()
{
scratchpad_state = sram_read(SHARED_MEM_TX_LOC_STATE);
@ -70,6 +116,9 @@ void shared_memory_irq_restore()
void shared_memory_write(uint8_t cmd, uint8_t value)
{
if (scratchpad_locked_tx)
debug(DEBUG_SHM,"shared_memory_write: locked_tx\n");
debug(DEBUG_SHM,"shared_memory_write: 0x%04x=0x%02x 0x%04x=0x%02x \n",
SHARED_MEM_TX_LOC_CMD, cmd, SHARED_MEM_TX_LOC_PAYLOAD, value);
@ -124,6 +173,9 @@ void shared_memory_yield()
int shared_memory_read(uint8_t *cmd, uint8_t *len,uint8_t *buffer)
{
uint8_t state;
if (scratchpad_locked_rx)
debug(DEBUG_SHM,"shared_memory_write: locked_tx\n");
state = sram_read(SHARED_MEM_RX_LOC_STATE);

7
avr/usbload/shared_memory.h
View File

@ -37,6 +37,7 @@
#define SHARED_MEM_TX_CMD_TERMINATE 0x06
#define SHARED_MEM_TX_LOC_STATE 0x000000
#define SHARED_MEM_TX_LOC_SIZE 0x000100
#define SHARED_MEM_TX_LOC_CMD 0x000001
#define SHARED_MEM_TX_LOC_PAYLOAD 0x000002
@ -47,6 +48,7 @@
#define SHARED_MEM_RX_CMD_FILESEL 0x01
#define SHARED_MEM_RX_LOC_STATE 0x001000
#define SHARED_MEM_RX_LOC_SIZE 0x000400
#define SHARED_MEM_RX_LOC_CMD 0x001001
#define SHARED_MEM_RX_LOC_LEN 0x001002
#define SHARED_MEM_RX_LOC_PAYLOAD 0x001003
@ -60,6 +62,11 @@
void shared_memory_scratchpad_region_saye_helper(uint32_t addr);
void shared_memory_scratchpad_region_tx_save();
void shared_memory_scratchpad_region_tx_restore();
void shared_memory_scratchpad_region_rx_save();
void shared_memory_scratchpad_region_rx_restore();
void shared_memory_write(uint8_t cmd, uint8_t value);
int shared_memory_read(uint8_t *cmd, uint8_t *len,uint8_t *buffer);