From 46ef3985567c2af7aaba8a0a0e546bc9e693fe83 Mon Sep 17 00:00:00 2001
From: Rahix <rahix@rahix.de>
Date: Tue, 20 Aug 2019 20:56:21 +0200
Subject: [PATCH] feat(pmic): Add API-call to read battery voltage
Signed-off-by: Rahix <rahix@rahix.de>
---
epicardium/epicardium.h | 11 +++++++++++
epicardium/modules/pmic.c | 8 ++++++++
pycardium/modules/os.c | 13 +++++++++++++
pycardium/modules/qstrdefs.h | 1 +
4 files changed, 33 insertions(+)
diff --git a/epicardium/epicardium.h b/epicardium/epicardium.h
index 87b24e89..69899aae 100644
--- a/epicardium/epicardium.h
+++ b/epicardium/epicardium.h
@@ -32,6 +32,7 @@ typedef _Bool bool;
#define API_SYSTEM_EXIT 0x1
#define API_SYSTEM_EXEC 0x2
#define API_SYSTEM_RESET 0x3
+#define API_BATTERY_VOLTAGE 0x4
#define API_INTERRUPT_ENABLE 0xA
#define API_INTERRUPT_DISABLE 0xB
@@ -210,6 +211,16 @@ API(API_SYSTEM_EXEC, int __epic_exec(char *name));
*/
API(API_SYSTEM_RESET, void epic_system_reset(void));
+/**
+ * Battery Voltage
+ * ===============
+ */
+
+/**
+ * Read the current battery voltage.
+ */
+API(API_BATTERY_VOLTAGE, int epic_read_battery_voltage(float *result));
+
/**
* UART/Serial Interface
* =====================
diff --git a/epicardium/modules/pmic.c b/epicardium/modules/pmic.c
index 6822f02d..ef97392c 100644
--- a/epicardium/modules/pmic.c
+++ b/epicardium/modules/pmic.c
@@ -180,6 +180,14 @@ static void pmic_check_battery()
*/
}
+/*
+ * API-call for battery voltage
+ */
+int epic_read_battery_voltage(float *result)
+{
+ return pmic_read_amux(PMIC_AMUX_BATT_U, result);
+}
+
static StaticTimer_t pmic_timer_data;
static void vPmicTimerCb(TimerHandle_t xTimer)
{
diff --git a/pycardium/modules/os.c b/pycardium/modules/os.c
index 385cc9de..c017e417 100644
--- a/pycardium/modules/os.c
+++ b/pycardium/modules/os.c
@@ -123,6 +123,18 @@ static mp_obj_t mp_os_rename(mp_obj_t py_oldp, mp_obj_t py_newp)
}
static MP_DEFINE_CONST_FUN_OBJ_2(rename_obj, mp_os_rename);
+static mp_obj_t mp_os_read_battery()
+{
+ float result;
+ int res = epic_read_battery_voltage(&result);
+ if (res < 0) {
+ mp_raise_OSError(-res);
+ }
+
+ return mp_obj_new_float(result);
+}
+static MP_DEFINE_CONST_FUN_OBJ_0(read_battery_obj, mp_os_read_battery);
+
static const mp_rom_map_elem_t os_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_os) },
{ MP_ROM_QSTR(MP_QSTR_exit), MP_ROM_PTR(&exit_obj) },
@@ -132,6 +144,7 @@ static const mp_rom_map_elem_t os_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR_unlink), MP_ROM_PTR(&unlink_obj) },
{ MP_ROM_QSTR(MP_QSTR_mkdir), MP_ROM_PTR(&mkdir_obj) },
{ MP_ROM_QSTR(MP_QSTR_rename), MP_ROM_PTR(&rename_obj) },
+ { MP_ROM_QSTR(MP_QSTR_read_battery), MP_ROM_PTR(&read_battery_obj) },
};
static MP_DEFINE_CONST_DICT(os_module_globals, os_module_globals_table);
diff --git a/pycardium/modules/qstrdefs.h b/pycardium/modules/qstrdefs.h
index acf598f1..f78afd25 100644
--- a/pycardium/modules/qstrdefs.h
+++ b/pycardium/modules/qstrdefs.h
@@ -105,6 +105,7 @@ Q(listdir)
Q(unlink)
Q(mkdir)
Q(rename)
+Q(read_battery)
/* gpio */
Q(gpio)
--
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