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Issue #18: further iomplementation of safety memory

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This commit is contained in:
Mario Hüttel
2020-09-05 20:06:13 +02:00
parent 331b049868
commit d0cf95db49
2 changed files with 92 additions and 4 deletions
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1
stm-firmware/include/reflow-controller/safety/safety-memory.h
View File

@@ -95,6 +95,7 @@ enum safety_memory_error_entry_type {
struct error_memory_entry {
enum safety_memory_error_entry_type type;
uint8_t flag_num;
uint16_t counter;
};
enum config_override_entry_type {

95
stm-firmware/safety/safety-memory.c
View File

@@ -24,6 +24,46 @@
#define wordsize_of(x) ((sizeof(x) / 4U) / ((sizeof(x) % 4U) ? 0U : 1U))
static int word_to_error_memory_entry(uint32_t entry_data, struct error_memory_entry *out)
{
int ret = 0;
if (!out)
return -1002;
if (entry_data == SAFETY_MEMORY_ERR_ENTRY_NOP) {
out->flag_num = 0U;
out->type = SAFETY_MEMORY_ERR_ENTRY_NOP;
out->counter = 0U;
} else if ((entry_data & 0xFFU) == 0x51U) {
out->flag_num = (uint8_t)((entry_data >> 8U) & 0xFFU);
out->type = SAFETY_MEMORY_ERR_ENTRY_FLAG;
out->counter = (uint16_t)((entry_data >> 16U) & 0xFFFF);
} else {
/* Invalid entry */
ret = -1;
}
return ret;
}
static uint32_t error_memory_entry_to_word(const struct error_memory_entry *entry)
{
uint32_t word = 0;
switch (entry->type) {
case SAFETY_MEMORY_ERR_ENTRY_NOP:
word = SAFETY_MEMORY_NOP_ENTRY;
break;
case SAFETY_MEMORY_ERR_ENTRY_FLAG:
word = 0x51UL | ((uint32_t)entry->flag_num << 8U) |
((uint32_t)entry->counter << 16U);
break;
}
return word;
}
static enum safety_memory_state safety_memory_get_header(struct safety_memory_header *header)
{
@@ -156,8 +196,8 @@ int safety_memory_reinit(enum safety_memory_state *found_state)
switch (*found_state) {
case SAFETY_MEMORY_INIT_VALID_MEMORY:
/* Valid memory detected. Check CRC */
res = safety_memory_check_crc();
/* Valid memory detected. Check CRC and error entries */
res = safety_memory_check();
if (res)
*found_state = SAFETY_MEMORY_INIT_CORRUPTED;
break;
@@ -268,7 +308,21 @@ static int safety_memory_check_error_entries()
return ret;
}
int safety_memory_get_error_entry_count(uint32_t *count);
int safety_memory_get_error_entry_count(uint32_t *count)
{
struct safety_memory_header header;
if (!count)
return -1001;
if (safety_memory_get_header(&header) != SAFETY_MEMORY_INIT_VALID_MEMORY) {
return -2000;
}
*count = header.err_memory_end - header.err_memory_offset;
return 0;
}
int safety_memory_check(void)
{
@@ -282,7 +336,40 @@ int safety_memory_check(void)
return -!!res;
}
int safety_memory_get_error_entry(uint32_t idx, struct error_memory_entry *entry);
int safety_memory_get_error_entry(uint32_t idx, struct error_memory_entry *entry)
{
struct safety_memory_header header;
uint32_t err_mem_count;
int ret = -1;
int res;
uint32_t data;
if (!entry)
return -1001;
if (safety_memory_get_header(&header) != SAFETY_MEMORY_INIT_VALID_MEMORY) {
return -2000;
}
err_mem_count = header.err_memory_end - header.err_memory_offset;
if (idx < err_mem_count && err_mem_count > 0) {
res = backup_ram_get_data(header.err_memory_offset + idx, &data, 1UL);
if (res)
goto return_value;
res = word_to_error_memory_entry(data, entry);
if (res)
goto return_value;
ret = 0;
} else {
/* out of range */
ret = -1001;
}
return_value:
return ret;
}
int safety_memory_insert_error_entry(struct error_memory_entry *entry);