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Improve editor folding (some editors use indentation as cue)

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Henry Gabryjelski 2024-05-14 19:16:37 -07:00
commit b7fff95b7c
1 changed files with 40 additions and 33 deletions
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73
armsrc/em4x70.c
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@ -30,43 +30,50 @@ static em4x70_tag_t tag = { 0 };
// EM4170 requires a parity bit on commands, other variants do not. // EM4170 requires a parity bit on commands, other variants do not.
static bool command_parity = true; static bool command_parity = true;
// Conversion from Ticks to RF periods
// 1 us = 1.5 ticks
// 1RF Period = 8us = 12 Ticks
#define TICKS_PER_FC 12
// Chip timing from datasheet #if 1 // Calculation of ticks for timing functions
// Converted into Ticks for timing functions // Conversion from Ticks to RF periods
#define EM4X70_T_TAG_QUARTER_PERIOD (8 * TICKS_PER_FC) // 1 us = 1.5 ticks
#define EM4X70_T_TAG_HALF_PERIOD (16 * TICKS_PER_FC) // 1RF Period = 8us = 12 Ticks
#define EM4X70_T_TAG_THREE_QUARTER_PERIOD (24 * TICKS_PER_FC) #define TICKS_PER_FC 12
#define EM4X70_T_TAG_FULL_PERIOD (32 * TICKS_PER_FC) // 1 Bit Period
#define EM4X70_T_TAG_TWA (128 * TICKS_PER_FC) // Write Access Time
#define EM4X70_T_TAG_DIV (224 * TICKS_PER_FC) // Divergency Time
#define EM4X70_T_TAG_AUTH (4224 * TICKS_PER_FC) // Authentication Time
#define EM4X70_T_TAG_WEE (3072 * TICKS_PER_FC) // EEPROM write Time
#define EM4X70_T_TAG_TWALB (672 * TICKS_PER_FC) // Write Access Time of Lock Bits
#define EM4X70_T_TAG_BITMOD (4 * TICKS_PER_FC) // Initial time to stop modulation when sending 0
#define EM4X70_T_TAG_TOLERANCE (8 * TICKS_PER_FC) // Tolerance in RF periods for receive/LIW
#define EM4X70_T_TAG_TIMEOUT (4 * EM4X70_T_TAG_FULL_PERIOD) // Timeout if we ever get a pulse longer than this // Chip timing from datasheet
#define EM4X70_T_WAITING_FOR_LIW 50 // Pulses to wait for listen window // Converted into Ticks for timing functions
#define EM4X70_T_READ_HEADER_LEN 16 // Read header length (16 bit periods) #define EM4X70_T_TAG_QUARTER_PERIOD (8 * TICKS_PER_FC)
#define EM4X70_T_TAG_HALF_PERIOD (16 * TICKS_PER_FC)
#define EM4X70_T_TAG_THREE_QUARTER_PERIOD (24 * TICKS_PER_FC)
#define EM4X70_T_TAG_FULL_PERIOD (32 * TICKS_PER_FC) // 1 Bit Period
#define EM4X70_T_TAG_TWA (128 * TICKS_PER_FC) // Write Access Time
#define EM4X70_T_TAG_DIV (224 * TICKS_PER_FC) // Divergency Time
#define EM4X70_T_TAG_AUTH (4224 * TICKS_PER_FC) // Authentication Time
#define EM4X70_T_TAG_WEE (3072 * TICKS_PER_FC) // EEPROM write Time
#define EM4X70_T_TAG_TWALB (672 * TICKS_PER_FC) // Write Access Time of Lock Bits
#define EM4X70_T_TAG_BITMOD (4 * TICKS_PER_FC) // Initial time to stop modulation when sending 0
#define EM4X70_T_TAG_TOLERANCE (8 * TICKS_PER_FC) // Tolerance in RF periods for receive/LIW
#define EM4X70_COMMAND_RETRIES 5 // Attempts to send/read command #define EM4X70_T_TAG_TIMEOUT (4 * EM4X70_T_TAG_FULL_PERIOD) // Timeout if we ever get a pulse longer than this
#define EM4X70_MAX_RECEIVE_LENGTH 96 // Maximum bits to expect from any command #define EM4X70_T_WAITING_FOR_LIW 50 // Pulses to wait for listen window
#define EM4X70_T_READ_HEADER_LEN 16 // Read header length (16 bit periods)
/** #define EM4X70_COMMAND_RETRIES 5 // Attempts to send/read command
* These IDs are from the EM4170 datasheet #define EM4X70_MAX_RECEIVE_LENGTH 96 // Maximum bits to expect from any command
* Some versions of the chip require a #endif // Calculation of ticks for timing functions
* (even) parity bit, others do not
*/ #if 1 // EM4x70 Command IDs
#define EM4X70_COMMAND_ID 0x01 /**
#define EM4X70_COMMAND_UM1 0x02 * These IDs are from the EM4170 datasheet.
#define EM4X70_COMMAND_AUTH 0x03 * Some versions of the chip require a
#define EM4X70_COMMAND_PIN 0x04 * (even) parity bit, others do not.
#define EM4X70_COMMAND_WRITE 0x05 * The command is thus stored only in the
#define EM4X70_COMMAND_UM2 0x07 * three least significant bits (mask 0x07).
*/
#define EM4X70_COMMAND_ID 0x01
#define EM4X70_COMMAND_UM1 0x02
#define EM4X70_COMMAND_AUTH 0x03
#define EM4X70_COMMAND_PIN 0x04
#define EM4X70_COMMAND_WRITE 0x05
#define EM4X70_COMMAND_UM2 0x07
#endif // EM4x70 Command IDs
// Constants used to determine high/low state of signal // Constants used to determine high/low state of signal
#define EM4X70_NOISE_THRESHOLD 13 // May depend on noise in environment #define EM4X70_NOISE_THRESHOLD 13 // May depend on noise in environment