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more error codes

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This commit is contained in:
Wolfgang Hottgenroth
2020-09-04 19:31:20 +02:00
parent 3ec9dca233
commit 0071051c18
2 changed files with 24 additions and 6 deletions
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14
src/mbusgw.c
View File

@@ -228,7 +228,7 @@ void closeSerial(int fd) {
}
uint8_t request(int fd, uint8_t cmd, uint8_t addr, t_longframe **retFrame) {
uint8_t retCode = 0;
uint8_t retCode = SUCCESS;
t_longframe *frame = (t_longframe*) malloc(sizeof(t_longframe));
if (! frame) {
@@ -292,18 +292,21 @@ uint8_t request(int fd, uint8_t cmd, uint8_t addr, t_longframe **retFrame) {
state = e_LENGTH1;
} else {
errlog("invalid start1 symbol %02x\n", c);
retCode = ERROR_STATE_ENGINE__START1;
state = e_ERROR;
}
break;
case e_LENGTH1:
if (c <= 3) {
errlog("length to small %02x\n", c);
retCode = ERROR_STATE_ENGINE__LENGTH1;
state = e_ERROR;
} else {
frame->length1 = c;
frame->userdata = (uint8_t*) malloc(frame->length1 - 3);
if (! frame->userdata) {
errlog("unable to allocate memory for userdata\n");
retCode = ERROR_OUT_OF_MEMORY__USERDATA;
state = e_ERROR;
}
state = e_LENGTH2;
@@ -312,6 +315,7 @@ uint8_t request(int fd, uint8_t cmd, uint8_t addr, t_longframe **retFrame) {
case e_LENGTH2:
if (frame->length1 != c) {
errlog("invalid length2 %02x vs. %02x\n", frame->length1, c);
retCode = ERROR_STATE_ENGINE__LENGTH2;
state = e_ERROR;
} else {
frame->length2 = c;
@@ -324,6 +328,7 @@ uint8_t request(int fd, uint8_t cmd, uint8_t addr, t_longframe **retFrame) {
state = e_C_FIELD;
} else {
errlog("invalid start2 symbol %02x\n", c);
retCode = ERROR_STATE_ENGINE__START2;
state = e_ERROR;
}
break;
@@ -353,6 +358,7 @@ uint8_t request(int fd, uint8_t cmd, uint8_t addr, t_longframe **retFrame) {
case e_CHKSUM:
if (c != calculatedChksum) {
errlog("invalid checksum %02x vs %02x\n", calculatedChksum, c);
retCode = ERROR_STATE_ENGINE__INVALID_CHKSUM;
state = e_ERROR;
} else {
frame->chksum = c;
@@ -365,11 +371,13 @@ uint8_t request(int fd, uint8_t cmd, uint8_t addr, t_longframe **retFrame) {
state = e_DONE;
} else {
errlog("invalid stop symbol %02x\n", c);
retCode = ERROR_STATE_ENGINE__STOP;
state = e_ERROR;
}
break;
default:
errlog("illegal state %d\n", state);
retCode = ERROR_STATE_ENGINE__ILLEGAL_STATE;
state = e_ERROR;
break;
}
@@ -377,7 +385,9 @@ uint8_t request(int fd, uint8_t cmd, uint8_t addr, t_longframe **retFrame) {
if ((state == e_ERROR) || (state == e_TIMEOUT)) {
if (state == e_ERROR) {
retCode = ERROR_STATE_ENGINE;
if (retCode == SUCCESS) {
retCode = ERROR_STATE_ENGINE__UNKNOWN;
}
} else if (state == e_TIMEOUT) {
retCode = ERROR_TIMEOUT;
}

16
src/mbusgw.h
View File

@@ -19,10 +19,18 @@
#define SUCCESS 0
#define ERROR_TIMEOUT 1
#define ERROR_STATE_ENGINE 2
#define ERROR_LOOP_FAILURE 3
#define ERROR_TX_REG_UNACCESSIBLE 4
#define ERROR_OUT_OF_MEMORY 5
#define ERROR_LOOP_FAILURE 2
#define ERROR_TX_REG_UNACCESSIBLE 3
#define ERROR_OUT_OF_MEMORY__FRAME 4
#define ERROR_OUT_OF_MEMORY__USERDATA 5
#define ERROR_STATE_ENGINE__START1 10
#define ERROR_STATE_ENGINE__LENGTH1 11
#define ERROR_STATE_ENGINE__LENGTH2 12
#define ERROR_STATE_ENGINE__START2 13
#define ERROR_STATE_ENGINE__INVALID_CHKSUM 14
#define ERROR_STATE_ENGINE__STOP 15
#define ERROR_STATE_ENGINE__ILLEGAL_STATE 16
#define ERROR_STATE_ENGINE__UNKNOWN 17
typedef struct {