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authorVitja Makarov <vitja.makarov@gmail.com>2008-12-21 19:16:54 +0000
committerVitja Makarov <vitja.makarov@gmail.com>2008-12-21 19:16:54 +0000
commit19413fc8060fb80eae668ddfdf3c4fa7e751e5b4 (patch)
treeaf22ea8e93f0b752fe43f012cbbe57656dcf14ba /firmware/target/arm/tcc77x
parentf6789a7d7316c284e33a2ebbdf86d147ce703993 (diff)
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iaudio7: add battery voltage monitoring
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19549 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/target/arm/tcc77x')
-rw-r--r--firmware/target/arm/tcc77x/iaudio7/powermgmt-iaudio7.c84
-rw-r--r--firmware/target/arm/tcc77x/system-tcc77x.c6
2 files changed, 87 insertions, 3 deletions
diff --git a/firmware/target/arm/tcc77x/iaudio7/powermgmt-iaudio7.c b/firmware/target/arm/tcc77x/iaudio7/powermgmt-iaudio7.c
new file mode 100644
index 0000000000..e391ada10a
--- /dev/null
+++ b/firmware/target/arm/tcc77x/iaudio7/powermgmt-iaudio7.c
@@ -0,0 +1,84 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id: powermgmt-cowond2.c 17847 2008-06-28 18:10:04Z bagder $
+ *
+ * Copyright (C) 2007 by Karl Kurbjun
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "config.h"
+#include "adc.h"
+#include "powermgmt.h"
+#include "kernel.h"
+#include "pcf50606.h"
+
+unsigned short current_voltage = 5150;
+
+const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
+{
+ /* FIXME: calibrate value */
+ 3380
+};
+
+const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
+{
+ /* FIXME: calibrate value */
+ 3300
+};
+
+/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
+const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
+{
+ /* FIXME: calibrate values. Table is "inherited" from iPod-PCF / H100 */
+ { 4500, 4810, 4910, 4970, 5030, 5070, 5120, 5140, 5170, 5250, 5400 }
+};
+
+#if CONFIG_CHARGING
+/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
+const unsigned short percent_to_volt_charge[11] =
+{
+ /* FIXME: calibrate values. Table is "inherited" from iPod-PCF / H100 */
+ 4760, 5440, 5510, 5560, 5610, 5640, 5660, 5760, 5820, 5840, 5850 /* NiMH */
+};
+#endif /* CONFIG_CHARGING */
+
+#define BATTERY_SCALE_FACTOR 6000
+/* full-scale ADC readout (2^10) in millivolt */
+
+/* Returns battery voltage from ADC [millivolts] */
+unsigned int battery_adc_voltage(void)
+{
+ static unsigned last_tick = 0;
+
+ if (0 == last_tick || TIME_BEFORE(last_tick+HZ, current_tick))
+ {
+ int adc_val, irq_status;
+ unsigned char buf[2];
+
+ irq_status = disable_irq_save();
+ pcf50606_write(PCF5060X_ADCC2, 0x1);
+ pcf50606_read_multiple(PCF5060X_ADCS1, buf, 2);
+ restore_interrupt(irq_status);
+
+ adc_val = (buf[0]<<2) | (buf[1] & 3); //ADCDAT1H+ADCDAT1L
+ current_voltage = (adc_val * BATTERY_SCALE_FACTOR) >> 10;
+
+ last_tick = current_tick;
+ }
+
+ return current_voltage;
+}
+
diff --git a/firmware/target/arm/tcc77x/system-tcc77x.c b/firmware/target/arm/tcc77x/system-tcc77x.c
index 38004851bd..0896026b55 100644
--- a/firmware/target/arm/tcc77x/system-tcc77x.c
+++ b/firmware/target/arm/tcc77x/system-tcc77x.c
@@ -99,12 +99,12 @@ static void gpio_init(void)
GPIOD_FUNC = 0;
GPIOE_FUNC = 0;
GPIOA = 0x30;
- GPIOB = 0x80000;
+ GPIOB = 0x00c00;
GPIOC = 0;
GPIOD = 0x180;
- GPIOE = 0;
+ GPIOE = 0x80;
GPIOA_DIR = 0x84b0;
- GPIOB_DIR = 0x80800;
+ GPIOB_DIR = 0x80c00;
GPIOC_DIR = 0x2000000;
GPIOD_DIR = 0x3e3;
GPIOE_DIR = 0x88;