From: Keith Packard <keithp@keithp.com>
Date: Sun, 8 Apr 2012 03:31:58 +0000 (-0700)
Subject: altos: Add STM temperature sensor calibration data
X-Git-Tag: 1.0.9.5~68
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=0bce68e6a0abc19f49c573331164d13643c9bee5

altos: Add STM temperature sensor calibration data

Each stm32l has two-point factory temperature calibration data.
Provide access to that for displaying temperature data.

Signed-off-by: Keith Packard <keithp@keithp.com>
---

diff --git a/src/stm/registers.ld b/src/stm/registers.ld
index 51921444..fd61e486 100644
--- a/src/stm/registers.ld
+++ b/src/stm/registers.ld
@@ -44,4 +44,7 @@ stm_tim4   = 0x40000800;
 stm_tim3   = 0x40000400;
 stm_tim2   = 0x40000000;
 
-stm_nvic   = 0xe000e100;
\ No newline at end of file
+stm_nvic   = 0xe000e100;
+
+/* calibration data in system memory */
+stm_temp_cal = 0x1ff80078;
diff --git a/src/stm/stm32l.h b/src/stm/stm32l.h
index b9f45513..338bc471 100644
--- a/src/stm/stm32l.h
+++ b/src/stm/stm32l.h
@@ -1152,4 +1152,16 @@ extern struct stm_adc stm_adc;
 #define  STM_ADC_CCR_ADCPRE_HSI_4	2
 #define  STM_ADC_CCR_ADCPRE_MASK	3
 
+struct stm_temp_cal {
+	uint16_t	vref;
+	uint16_t	ts_cal_cold;
+	uint16_t	reserved;
+	uint16_t	ts_cal_hot;
+};
+
+extern struct stm_temp_cal	stm_temp_cal;
+
+#define stm_temp_cal_cold	25
+#define stm_temp_cal_hot	110
+
 #endif /* _STM32L_H_ */