+++ /dev/null
-
-#define SNO_WRITE_SCRATCHPAD 0x0f
-#define SNO_READ_SCRATCHPAD 0xaa
-#define SNO_COPY_SCRATCHPAD 0x55
-#define SNO_READ_MEMORY 0xf0
-#define SNO_WRITE_APPLICATION_REG 0x99
-#define SNO_READ_STATUS_REG 0x66
-#define SNO_READ_APPLICATION_REG 0xc3
-#define SNO_COPY_LOCK 0x5a
-#define SNO_READ_ROM 0x33
-#define SNO_MATCH_ROM 0x55
-#define SNO_SKIP_ROM 0xcc
-#define SNO_SEARCH_ROM 0xf0
-
-int reset_1w(void)
-{
- int fu_result;
-
- asm volatile (
- "ldr r4, =0x00000020;" // mask for GPIO 5
-
- "ldr r5, =0x40e0000c;" // pin dir register
- "ldr r6, [r5];"
- "orr r6, r6, r4;"
- "str r6, [r5];" // set GPIO to output
-
- "ldr r5, =0x40e00024;" // output clear register
- "str r4, [r5];" // reset pin
-
- "ldr r5, =0x40a00010;" // timer 500 usec
- "ldr r6, [r5];"
- "ldr r7, =1800;"
- "adc r6, r6, r7;"
-
- "112:;"
- "ldr r7, [r5];"
- "cmp r7, r6;"
- "bls 112b;"
-
- "ldr r5, =0x40e00018;" // output set register
- "str r4, [r5];" // reset pin
-
- "ldr r5, =0x40e0000c;" // pin dir register
- "ldr r6, [r5];"
- "bic r6, r6, r4;"
- "str r6, [r5];" // set GPIO to input
-
- "ldr r5, =0x40a00010;" // timer 80 usec
- "ldr r6, [r5];"
- "ldr r7, =288;"
- "adc r6, r6, r7;"
-
- "113:;"
- "ldr r7, [r5];"
- "cmp r7, r6;"
- "bls 113b;"
-
- "ldr r5, =0x40e00000;" // pin level register
- "ldr r6, [r5];"
- "and r6, r6, r4;"
- "mov %0, r6, lsr#5;" // shift right by 5
-
- "ldr r5, =0x40a00010;" // timer 500 usec
- "ldr r6, [r5];"
- "ldr r7, =1800;"
- "adc r6, r6, r7;"
-
- "114:;"
- "ldr r7, [r5];"
- "cmp r7, r6;"
- "bls 114b;"
-
- : "=r"(fu_result)
- :
- : "r4","r5","r6","r7");
-
- return fu_result;
-}
-
-int sno_read(void)
-{
- int fu_result;
-
- asm volatile (
- "ldr r4, =0x00000020;" // mask for GPIO 5
-
- "ldr r5, =0x40e0000c;" // pin dir register
- "ldr r6, [r5];"
- "orr r6, r6, r4;"
- "str r6, [r5];" // set GPIO to output
-
- "ldr r5, =0x40e00024;" // output clear register
- "str r4, [r5];" // reset pin
-
- "ldr r5, =0x40a00010;" // timer 5 usec
- "ldr r6, [r5];"
- "adc r6, r6, #18;"
-
- "112:;"
- "ldr r7, [r5];"
- "cmp r7, r6;"
- "bls 112b;"
-
- "ldr r5, =0x40e00018;" // output set register
- "str r4, [r5];" // reset pin
-
- "ldr r5, =0x40e0000c;" // pin dir register
- "ldr r6, [r5];"
- "bic r6, r6, r4;"
- "str r6, [r5];" // set GPIO to input
-
- "ldr r5, =0x40a00010;" // timer 5 usec
- "ldr r6, [r5];"
- "adc r6, r6, #18;"
-
- "113:;"
- "ldr r7, [r5];"
- "cmp r7, r6;"
- "bls 113b;"
-
- "ldr r5, =0x40e00000;" // pin level register
- "ldr r6, [r5];"
- "and r6, r6, r4;"
- "mov %0, r6, lsr#5;" // shift right by 5
-
- : "=r"(fu_result)
- :
- : "r4","r5","r6","r7");
-
- return fu_result;
-}
-
-void sno_write_1(void)
-{
- asm volatile (
- "ldr r4, =0x00000020;" // mask for GPIO 5
-
- "ldr r5, =0x40e0000c;" // pin dir register
- "ldr r6, [r5];"
- "orr r6, r6, r4;"
- "str r6, [r5];" // set GPIO to output
-
- "ldr r5, =0x40e00024;" // output clear register
- "str r4, [r5];" // reset pin
-
- "ldr r5, =0x40a00010;" // timer 5 usec
- "ldr r6, [r5];"
- "adc r6, r6, #18;"
-
- "112:;"
- "ldr r7, [r5];"
- "cmp r7, r6;"
- "bls 112b;"
-
- "ldr r5, =0x40e00018;" // output set register
- "str r4, [r5];" // reset pin
-
- "ldr r5, =0x40e0000c;" // pin dir register
- "ldr r6, [r5];"
- "bic r6, r6, r4;"
- "str r6, [r5];" // set GPIO to input
-
- "ldr r5, =0x40a00010;" // timer 60 usec
- "ldr r6, [r5];"
- "adc r6, r6, #214;"
-
- "113:;"
- "ldr r7, [r5];"
- "cmp r7, r6;"
- "bls 113b;"
-
- :
- :
- : "r4","r5","r6","r7");
-}
-
-void sno_write_0(void)
-{
- asm volatile (
- "ldr r4, =0x00000020;" // mask for GPIO 5
-
- "ldr r5, =0x40e0000c;" // pin dir register
- "ldr r6, [r5];"
- "orr r6, r6, r4;"
- "str r6, [r5];" // set GPIO to output
-
- "ldr r5, =0x40e00024;" // output clear register
- "str r4, [r5];" // reset pin
-
- "ldr r5, =0x40a00010;" // timer 67 usec
- "ldr r6, [r5];"
- "adc r6, r6, #240;"
-
- "112:;"
- "ldr r7, [r5];"
- "cmp r7, r6;"
- "bls 112b;"
-
- "ldr r5, =0x40e00018;" // output set register
- "str r4, [r5];" // reset pin
-
- "ldr r5, =0x40e0000c;" // pin dir register
- "ldr r6, [r5];"
- "bic r6, r6, r4;"
- "str r6, [r5];" // set GPIO to input
-
- :
- :
- : "r4","r5","r6","r7");
-}
-
-void sno_write_byte (unsigned char sbyte)
-{
- unsigned char mask;
- int i;
-
- mask = 0x01;
- for (i = 0; i < 8; i++) {
- if (sbyte & mask) {
- sno_write_1();
- } else {
- sno_write_0();
- }
- mask <<= 1;
- HAL_DELAY_US(1);
- }
-}
-
-unsigned char sno_read_byte (void)
-{
- unsigned char mask = 0x01;
- unsigned char abyte = 0x00;
- unsigned char return_value;
- int i;
-
- for (i = 0; i < 8; i++) {
- return_value = sno_read();
- if (return_value) {
- abyte |= mask;
- }
- HAL_DELAY_US(80);
- mask <<= 1;
- }
- return abyte;
-}
-
-unsigned char sno_crc8(unsigned char * data, unsigned long count)
-{
- unsigned char look_up_table[256] = {
- 0, 94, 188, 226, 97, 63, 221, 131, 194, 156, 126, 32, 163, 253, 31, 65,
- 157, 195, 33, 127, 252, 162, 64, 30, 95, 1, 227, 189, 62, 96, 130, 220,
- 35, 125, 159, 193, 66, 28, 254, 160, 225, 191, 93, 3, 128, 222, 60, 98,
- 190, 224, 2, 92, 223, 129, 99, 61, 124, 34, 192, 158, 29, 67, 161, 255,
- 70, 24, 250, 164, 39, 121, 155, 197, 132, 218, 56, 102, 229, 187, 89, 7,
- 219, 133, 103, 57, 186, 228, 6, 88, 25, 71, 165, 251, 120, 38, 196, 154,
- 101, 59, 217, 135, 4, 90, 184, 230, 167, 249, 27, 69, 198, 152, 122, 36,
- 248, 166, 68, 26, 153, 199, 37, 123, 58, 100, 134, 216, 91, 5, 231, 185,
- 140, 210, 48, 110, 237, 179, 81, 15, 78, 16, 242, 172, 47, 113, 147, 205,
- 17, 79, 173, 243, 112, 46, 204, 146, 211, 141, 111, 49, 178, 236, 14, 80,
- 175, 241, 19, 77, 206, 144, 114, 44, 109, 51, 209, 143, 12, 82, 176, 238,
- 50, 108, 142, 208, 83, 13, 239, 177, 240, 174, 76, 18, 145, 207, 45, 115,
- 202, 148, 118, 40, 171, 245, 23, 73, 8, 86, 180, 234, 105, 55, 213, 139,
- 87, 9, 235, 181, 54, 104, 138, 212, 149, 203, 41, 119, 244, 170, 72, 22,
- 233, 183, 85, 11, 136, 214, 52, 106, 43, 117, 151, 201, 74, 20, 246, 168,
- 116, 42, 200, 150, 21, 75, 169, 247, 182, 232, 10, 84, 215, 137, 107, 53};
- int i;
- unsigned char crc = 0;
-
- for (i = 0; i < count; i++) {
- crc = look_up_table[crc ^ data[i]];
- }
- return crc;
-}
-
-int sno_reset(void)
-{
- int result;
-
- result = reset_1w();
- if (!result) {
- //diag_printf("presence pulse detected\n");
- return 0;
- } else {
- diag_printf("NO presence pulse detected\n");
- return 1;
- }
-}
-
-cyg_bool get_esa_1w(cyg_uint8 *buffer)
-{
- int i;
- unsigned char mac_data[8] = {0x00,0x00,0x0c,0xc6,0x00,0x00,0x00,0x00};
- unsigned char crc, status;
-
- asm volatile (
- "ldr r4, =0x00000020;" // mask for GPIO 5
- "ldr r7, =0x00000040;" // mask for GPIO 6
-
- "ldr r5, =0x40e0000c;" // pin dir register
- "ldr r6, [r5];"
- "orr r6, r6, r4;"
- "orr r6, r6, r7;"
-
- "str r6, [r5];" // set GPIO to output
-
- "ldr r5, =0x40e00024;" // output clear register
- "str r4, [r5];" // reset pin
-
- "ldr r5, =0x40e00018;" // output set register
- "str r7, [r5];" // set pin
-
- "ldr r5, =0x40e0000c;" // pin dir register
- "ldr r6, [r5];"
- "bic r6, r6, r4;"
- "str r6, [r5];" // set GPIO to input
-
- "ldr r4, =0x00003c00;"
- "ldr r5, =0x40e00054;" // alternate function register
- "ldr r6, [r5];"
- "bic r6, r6, r4;"
- "str r6, [r5];" // set GPIO to IO function
- :
- :
- : "r4","r5","r6","r7"
- );
-
- HAL_DELAY_US(2000); // 2 msec recovery time
-
- // check status of application register
-
- if (sno_reset()) {
- diag_printf("no eeprom device for MAC address found \n");
- return 0;
- }
-
- sno_write_byte(SNO_SKIP_ROM);
- sno_write_byte(SNO_READ_STATUS_REG);
- sno_write_byte(0x00); // validation key
- status = sno_read_byte();
- //diag_printf("Status des Application Registers ist: %02X\n", status);
-
- if (sno_reset()) {
- diag_printf("no eeprom device for MAC address found \n");
- return 0;
- }
-
- if (status & 0x03) {
- diag_printf("No information in Application Register !!!!\n");
- diag_printf("using defauft MAC 0x00 : 0x0C : 0xC6 : 0x00 : 0x00 : 0x00\n");
- for (i = 0; i < 6; i++) {
- buffer[i] = mac_data[i+1];
- }
- return 1;
- }
-
- sno_write_byte(SNO_SKIP_ROM);
- sno_write_byte(SNO_READ_APPLICATION_REG);
- sno_write_byte(0x00); // register address
- for (i = 0; i < 8;i++) {
- mac_data[i] = sno_read_byte();
- }
-
- if (sno_reset()) {
- diag_printf("no eeprom device for MAC address found \n");
- return 0;
- }
-
-// diag_printf("\nMAC address read from ROM: ");
-// for (i=0; i<8; i++) {
-// diag_printf("0x%02X ", mac_data[i]);
-// }
- diag_printf("\n");
-
- crc = sno_crc8(mac_data,7);
-
- //diag_printf("calculated CRC is: %02X\n", crc );
-
- if (crc != mac_data[7]) {
- diag_printf("ROM data CRC Checksum Error !!!\n\n");
- return 0;
- }
-
- for (i = 0; i < 6; i++)
- buffer[i] = mac_data[i + 1];
-
- return 1;
-}
projects / karo-tx-redboot.git / blobdiff