diff options
| author | Amaury Pouly <amaury.pouly@gmail.com> | 2012-03-17 17:39:27 +0100 |
|---|---|---|
| committer | Amaury Pouly <amaury.pouly@gmail.com> | 2012-03-17 17:42:49 +0100 |
| commit | e5b5041583e389e6866b210683a09c97a10077d3 (patch) | |
| tree | 256bc4b1f0fbccce21295afbda907988be78f3bb /firmware/target/arm/imx233/lradc-imx233.h | |
| parent | 7676dae3e0f279d4b193f1c9abf8977c8f52e5d2 (diff) | |
imx233/fuze+: rework lradc/adc code, add external temperature sensing(battery)
Rework code to be more useful:
- move battery channel init to lradc
- always init lradc from system (previously from adc)
- don't reserve channels for vddio, nmos or pmos
- implement external temperature sensing using current source
- use this for battery sensing on the Fuze+ (calibration needed)
Change-Id: I5f9a24b9243db7d1e6bdb16b84bc891e61d0c318
Diffstat (limited to 'firmware/target/arm/imx233/lradc-imx233.h')
| -rw-r--r-- | firmware/target/arm/imx233/lradc-imx233.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/firmware/target/arm/imx233/lradc-imx233.h b/firmware/target/arm/imx233/lradc-imx233.h index d79ebe0eff..b661fa8aa4 100644 --- a/firmware/target/arm/imx233/lradc-imx233.h +++ b/firmware/target/arm/imx233/lradc-imx233.h @@ -43,8 +43,14 @@ #define HW_LRADC_CTRL2__TEMP_ISRC1_BM 0xf0 #define HW_LRADC_CTRL2__TEMP_ISRC0_BP 0 #define HW_LRADC_CTRL2__TEMP_ISRC0_BM 0xf +#define HW_LRADC_CTRL2__TEMP_ISRCx_BP(x) (4 * (x)) +#define HW_LRADC_CTRL2__TEMP_ISRCx_BM(x) (0xf << (4 * (x))) +#define HW_LRADC_CTRL2__TEMP_ISRC__0uA 0 +#define HW_LRADC_CTRL2__TEMP_ISRC__20uA 1 +#define HW_LRADC_CTRL2__TEMP_ISRC__300uA 15 #define HW_LRADC_CTRL2__TEMP_SENSOR_IENABLE0 (1 << 8) #define HW_LRADC_CTRL2__TEMP_SENSOR_IENABLE1 (1 << 9) +#define HW_LRADC_CTRL2__TEMP_SENSOR_IENABLEx(x) (1 << (8 + (x))) #define HW_LRADC_CTRL2__TEMPSENSE_PWD (1 << 15) #define HW_LRADC_CTRL2__DIVIDE_BY_TWO(x) (1 << ((x) + 24)) @@ -59,7 +65,7 @@ #define HW_LRADC_STATUS (*(volatile uint32_t *)(HW_LRADC_BASE + 0x40)) #define HW_LRADC_CHx(x) (*(volatile uint32_t *)(HW_LRADC_BASE + 0x50 + (x) * 0x10)) -#define HW_LRADC_CHx__NUM_SAMPLES_BM (0xf << 24) +#define HW_LRADC_CHx__NUM_SAMPLES_BM (0x1f << 24) #define HW_LRADC_CHx__NUM_SAMPLES_BP 24 #define HW_LRADC_CHx__ACCUMULATE 29 #define HW_LRADC_CHx__VALUE_BM 0x3ffff @@ -127,8 +133,11 @@ void imx233_lradc_reserve_delay(int dchannel); void imx233_lradc_release_delay(int dchan); /* enable sensing and return temperature in kelvin, - * channels must already be configured as nmos and pmos */ + * channels needs not to be configured */ int imx233_lradc_sense_die_temperature(int nmos_chan, int pmos_chan); +/* return *raw* external temperature, might need some transformation + * channel needs not to be configured */ +int imx233_lradc_sense_ext_temperature(int chan, int sensor); void imx233_lradc_setup_battery_conversion(bool automatic, unsigned long scale_factor); // read scaled voltage, only available after proper setup |