FlapJackApps/libdc
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Use symbolic constants for the commands

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The two byte commands are in fact a single byte command. The second byte
is some kind of checksum, containing the command byte xor'ed with the
value 0xA5.
This commit is contained in:
Jef Driesen 2019-05-13 12:00:11 +02:00
parent ca784be4e2
commit 6fb09e05a4
1 changed files with 8 additions and 3 deletions
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11
src/mares_iconhd.c
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@ -49,6 +49,11 @@
#define ACK 0xAA
#define EOF 0xEA
#define XOR 0xA5
#define CMD_VERSION 0xC2
#define CMD_FLASHSIZE 0xB3
#define CMD_READ 0xE7
#define AIR 0
#define GAUGE 1
@ -370,7 +375,7 @@ mares_iconhd_device_open (dc_device_t **out, dc_context_t *context, dc_iostream_
dc_iostream_purge (device->iostream, DC_DIRECTION_ALL);
// Send the version command.
unsigned char command[] = {0xC2, 0x67};
unsigned char command[] = {CMD_VERSION, CMD_VERSION ^ XOR};
status = mares_iconhd_transfer (device, command, sizeof (command),
device->version, sizeof (device->version));
if (status != DC_STATUS_SUCCESS) {
@ -383,7 +388,7 @@ mares_iconhd_device_open (dc_device_t **out, dc_context_t *context, dc_iostream_
// Read the size of the flash memory.
unsigned int memsize = 0;
if (device->model == QUAD) {
unsigned char cmd_flash[] = {0xB3, 0x16};
unsigned char cmd_flash[] = {CMD_FLASHSIZE, CMD_FLASHSIZE ^ XOR};
unsigned char rsp_flash[4] = {0};
status = mares_iconhd_transfer (device, cmd_flash, sizeof (cmd_flash), rsp_flash, sizeof (rsp_flash));
if (status != DC_STATUS_SUCCESS) {
@ -473,7 +478,7 @@ mares_iconhd_device_read (dc_device_t *abstract, unsigned int address, unsigned
len = device->packetsize;
// Read the packet.
unsigned char command[] = {0xE7, 0x42,
unsigned char command[] = {CMD_READ, CMD_READ ^ XOR,
(address ) & 0xFF,
(address >> 8) & 0xFF,
(address >> 16) & 0xFF,