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-rw-r--r--fpm.c261
1 files changed, 0 insertions, 261 deletions
diff --git a/fpm.c b/fpm.c
deleted file mode 100644
index 84a64fe..0000000
--- a/fpm.c
+++ /dev/null
@@ -1,261 +0,0 @@
-#include <avr/io.h>
-#include <util/delay.h>
-#include <util/setbaud.h>
-
-#include "fpm.h"
-
-#define MAXPDLEN 64
-#define RST_DELAY_MS 500
-
-#define OK 0x00
-
-static uint8_t start_code[] = { 0xEF, 0x01 };
-static uint8_t addr[] = { 0xFF, 0xFF, 0xFF, 0xFF };
-
-static inline uint8_t read(void)
-{
- while (!(UCSR0A & (1 << RXC0)))
- ;
- return UDR0;
-}
-
-static inline void write(uint8_t c)
-{
- while (!(UCSR0A & (1 << UDRE0)))
- ;
- UDR0 = c;
-}
-
-static inline void write_bulk(uint8_t *data, uint16_t n)
-{
- int i;
-
- for (i = 0; i < n; i++)
- write(data[i]);
-}
-
-static inline void send(uint8_t pktid, uint8_t *data, uint8_t n)
-{
- int i;
- uint16_t pktlen, sum;
-
- write_bulk(start_code, 2);
- write_bulk(addr, 4);
- write(pktid);
-
- pktlen = n + 3;
- write((uint8_t)(pktlen >> 8));
- write((uint8_t)pktlen);
-
- sum = (pktlen >> 8) + (pktlen & 0xFF) + pktid;
- for (i = 0; i < n; i++) {
- write(data[i]);
- sum += data[i];
- }
-
- write((uint8_t)(sum >> 8));
- write((uint8_t)sum);
-}
-
-static inline void recv(uint8_t buf[MAXPDLEN], uint16_t *n)
-{
- int i;
- uint16_t len;
- uint8_t byte;
-
- i = 0, len = 0;
-
- for (;;) {
- byte = read();
- switch (i) {
- case 0:
- if (byte != start_code[0])
- continue;
- break;
- case 1:
- if (byte != start_code[1])
- goto bad_pkt;
- break;
- case 2:
- case 3:
- case 4:
- case 5:
- // toss the address
- break;
- case 6:
- // toss the packet id
- break;
- case 7:
- len = (uint16_t)byte << 8;
- break;
- case 8:
- len |= byte;
- break;
- default:
- if ((i - 9) < MAXPDLEN) {
- buf[i - 9] = byte;
- if ((i - 8) == len) {
- *n = len;
- return;
- }
- } else {
- goto bad_pkt;
- }
- break;
- }
- i++;
- }
-
-bad_pkt:
- *n = 0;
- return;
-}
-
-static inline uint8_t check_pwd(void)
-{
- unsigned int n;
- uint8_t buf[MAXPDLEN];
-
- buf[0] = 0x13;
- buf[1] = (uint8_t)((uint32_t)FPM_PWD >> 24);
- buf[2] = (uint8_t)((uint32_t)FPM_PWD >> 16);
- buf[3] = (uint8_t)((uint32_t)FPM_PWD >> 8);
- buf[4] = (uint8_t)((uint32_t)FPM_PWD & 0xFF);
-
- send(0x01, buf, 5);
- recv(buf, &n);
- return buf[0] == OK;
-}
-
-uint8_t fpm_init(void)
-{
- UBRR0H = UBRRH_VALUE;
- UBRR0L = UBRRL_VALUE;
-#if USE_2X
- UCSR0A |= (1 << U2X0);
-#else
- UCSR0A &= ~(1 << U2X0);
-#endif
- UCSR0B = (1 << TXEN0) | (1 << RXEN0);
- UCSR0C = (1 << UCSZ01) | (1 << UCSZ00);
-
- _delay_ms(RST_DELAY_MS);
-
- uint8_t buf[5];
- buf[0] = 0x35;
- buf[1] = 0x03;
- buf[2] = 0x00;
- buf[3] = 0x01;
- buf[4] = 0x00;
- send(0x01, buf, 5);
-
- return check_pwd();
-}
-
-uint8_t fpm_get_cfg(struct fpm_cfg *cfg)
-{
- uint16_t n;
- uint8_t buf[MAXPDLEN];
-
- buf[0] = 0x0F;
- send(0x01, buf, 1);
- recv(buf, &n);
-
- if (buf[0] == OK && n >= 17) {
- cfg->status = ((uint16_t)buf[1] << 8) | buf[2];
- cfg->sysid = ((uint16_t)buf[3] << 8) | buf[4];
- cfg->cap = ((uint16_t)buf[5] << 8) | buf[6];
- cfg->sec_level = ((uint16_t)buf[7] << 8) | buf[8];
- cfg->addr[0] = buf[9];
- cfg->addr[1] = buf[10];
- cfg->addr[2] = buf[11];
- cfg->addr[3] = buf[12];
- cfg->pkt_size = ((uint16_t)buf[13] << 8) | buf[14];
- cfg->pkt_size = 1 << (cfg->pkt_size + 5);
- cfg->baud = (((uint16_t)buf[15] << 8) | buf[16]);
-
- return 1;
- }
- return 0;
-}
-
-uint8_t fpm_set_pwd(uint32_t pwd)
-{
- uint16_t n;
- uint8_t buf[MAXPDLEN];
-
- buf[0] = 0x12;
- buf[1] = (uint8_t)(pwd >> 24);
- buf[2] = (uint8_t)(pwd >> 16);
- buf[3] = (uint8_t)(pwd >> 8);
- buf[4] = (uint8_t)(pwd & 0xFF);
-
- send(0x01, buf, 5);
- recv(buf, &n);
- return buf[0] == OK;
-}
-
-uint16_t fpm_get_count(void)
-{
- uint16_t n, count;
- uint8_t buf[MAXPDLEN];
-
- buf[0] = 0x1D;
- send(0x01, buf, 1);
- recv(buf, &n);
-
- count = 0;
- if (buf[0] == OK && n >= 2) {
- count = buf[1];
- count <<= 8;
- count |= buf[2];
- }
- return count;
-}
-
-uint8_t fpm_enroll(void)
-{
- uint16_t n, retries;
- uint8_t buf[MAXPDLEN];
-
- retries = 0;
-
- do {
- _delay_ms(100);
- buf[0] = 0x10;
- send(0x01, buf, 1);
- recv(buf, &n);
- retries++;
- } while (buf[0] != OK && retries < 50);
-
- return buf[0] == OK;
-}
-
-uint8_t fpm_match(void)
-{
- uint16_t n, retries;
- uint8_t buf[MAXPDLEN];
-
- retries = 0;
-
- do {
- _delay_ms(100);
- buf[0] = 0x11;
- send(0x01, buf, 1);
- recv(buf, &n);
- retries++;
- } while (buf[0] != OK && retries < 10);
-
- return buf[0] == OK;
-}
-
-uint8_t fpm_clear_db(void)
-{
- uint16_t n;
- uint8_t buf[MAXPDLEN];
-
- buf[0] = 0x0D;
- send(0x01, buf, 1);
- recv(buf, &n);
- return buf[0] == OK;
-}