diff options
Diffstat (limited to 'board/trab')
| -rw-r--r-- | board/trab/auto_update.c | 7 | ||||
| -rw-r--r-- | board/trab/cmd_trab.c | 56 | ||||
| -rw-r--r-- | board/trab/tsc2000.c | 49 |
3 files changed, 107 insertions, 5 deletions
diff --git a/board/trab/auto_update.c b/board/trab/auto_update.c index 393e094..0399fe8 100644 --- a/board/trab/auto_update.c +++ b/board/trab/auto_update.c @@ -416,6 +416,13 @@ au_update_eeprom(int idx) int off; uint32_t val; + /* special case for prepare.img */ + if (idx == IDX_PREPARE) { + /* enable the power switch */ + *CPLD_VFD_BK &= ~POWER_OFF; + return 0; + } + hdr = (image_header_t *)LOAD_ADDR; /* write the time field into EEPROM */ off = auee_off[idx].time; diff --git a/board/trab/cmd_trab.c b/board/trab/cmd_trab.c index 794c527..00eb385 100644 --- a/board/trab/cmd_trab.c +++ b/board/trab/cmd_trab.c @@ -26,6 +26,7 @@ #include <common.h> #include <command.h> #include <s3c2400.h> +#include <rtc.h> /* * TRAB board specific commands. Especially commands for burn-in and function @@ -117,6 +118,7 @@ int i2c_write_multiple (uchar chip, uint addr, int alen, uchar *buffer, int len); int i2c_read_multiple (uchar chip, uint addr, int alen, uchar *buffer, int len); +int do_temp_log (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); /* helper functions */ static void adc_init (void); @@ -173,6 +175,7 @@ int do_burn_in (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) led_init (); global_vars_init (); test_function_table_init (); + spi_init (); if (global_vars_write_to_eeprom () != 0) { printf ("%s: error writing global_vars to eeprom\n", @@ -334,7 +337,6 @@ int do_contact_temp (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) } spi_init (); - tsc2000_reg_init (); contact_temp = tsc2000_contact_temp(); printf ("%d degree C * 100\n", contact_temp) ; @@ -577,7 +579,6 @@ static int test_contact_temp (void) { int contact_temp; - spi_init (); contact_temp = tsc2000_contact_temp (); if ((contact_temp < MIN_CONTACT_TEMP) @@ -840,4 +841,55 @@ static int dummy(void) return (0); } +int do_temp_log (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + int contact_temp; + int delay = 0; +#if (CONFIG_COMMANDS & CFG_CMD_DATE) + struct rtc_time tm; +#endif + + if (argc > 2) { + printf ("Usage:\n%s\n", cmdtp->usage); + return 1; + } + + if (argc > 1) { + delay = simple_strtoul(argv[1], NULL, 10); + } + + spi_init (); + while (1) { + +#if (CONFIG_COMMANDS & CFG_CMD_DATE) + rtc_get (&tm); + printf ("%4d-%02d-%02d %2d:%02d:%02d - ", + tm.tm_year, tm.tm_mon, tm.tm_mday, + tm.tm_hour, tm.tm_min, tm.tm_sec); +#endif + + contact_temp = tsc2000_contact_temp(); + printf ("%d\n", contact_temp) ; + + if (delay != 0) + /* + * reset timer to avoid timestamp overflow problem + * after about 68 minutes of udelay() time. + */ + reset_timer_masked (); + sdelay (delay); + } + + return 0; +} + +U_BOOT_CMD( + tlog, 2, 1, do_temp_log, + "tlog - log contact temperature [1/100 C] to console (endlessly)\n", + "delay\n" + " - contact temperature [1/100 C] is printed endlessly to console\n" + " <delay> specifies the seconds to wait between two measurements\n" + " For each measurment a timestamp is printeted\n" +); + #endif /* CFG_CMD_BSP */ diff --git a/board/trab/tsc2000.c b/board/trab/tsc2000.c index df2d87f..ca68682 100644 --- a/board/trab/tsc2000.c +++ b/board/trab/tsc2000.c @@ -31,6 +31,16 @@ #include "Pt1000_temp_data.h" +/* helper function */ +#define abs(value) (((value) < 0) ? ((value)*-1) : (value)) + +/* + * Maximal allowed deviation between two immediate meassurments of an analog + * thermo channel. 1 DIGIT = 0.0276 °C. This is used to filter sporadic + * "jumps" in measurment. + */ +#define MAX_DEVIATION 18 /* unit: DIGITs of adc; 18 DIGIT = 0.5 °C */ + void spi_init(void) { S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO(); @@ -227,15 +237,48 @@ s32 tsc2000_contact_temp (void) long adc_pt1000, offset; long u_pt1000; long contact_temp; - + long temp1, temp2; tsc2000_reg_init (); tsc2000_set_range (3); - adc_pt1000 = tsc2000_read_channel (14); + /* + * Because of sporadic "jumps" in the measured adc values every + * channel is read two times. If there is a significant difference + * between the two measurements, then print an error and do a third + * measurement, because it is very unlikely that a successive third + * measurement goes also wrong. + */ + temp1 = tsc2000_read_channel (14); + temp2 = tsc2000_read_channel (14); + if (abs(temp2 - temp1) < MAX_DEVIATION) + adc_pt1000 = temp2; + else { + printf ("%s: read adc value (channel 14) exceeded max allowed " + "deviation: %d * 0.0276 °C\n", + __FUNCTION__, MAX_DEVIATION); + printf ("adc value 1: %ld DIGITs\nadc value 2: %ld DIGITs\n", + temp1, temp2); + adc_pt1000 = tsc2000_read_channel (14); + printf ("use (third read) adc value: adc_pt1000 = " + "%ld DIGITs\n", adc_pt1000); + } debug ("read channel 14 (pt1000 adc value): %ld\n", adc_pt1000); - offset = tsc2000_read_channel (15); + temp1 = tsc2000_read_channel (15); + temp2 = tsc2000_read_channel (15); + if (abs(temp2 - temp1) < MAX_DEVIATION) + offset = temp2; + else { + printf ("%s: read adc value (channel 15) exceeded max allowed " + "deviation: %d * 0.0276 °C\n", + __FUNCTION__, MAX_DEVIATION); + printf ("adc value 1: %ld DIGITs\nadc value 2: %ld DIGITs\n", + temp1, temp2); + offset = tsc2000_read_channel (15); + printf ("use (third read) adc value: offset = %ld DIGITs\n", + offset); + } debug ("read channel 15 (offset): %ld\n", offset); /* |