From c53fb9dc642980e776fe1d5307a72173002df2ac Mon Sep 17 00:00:00 2001 From: Rob Meades Date: Thu, 1 Mar 2018 14:52:42 +0000 Subject: [PATCH] Call i2c_init() before i2c_frequency() (since i2c_frequency() requires the object to be set up) and zero the I2C object before giving it to i2c_init() as i2_init() has to set up a default frequency for its timeouts to work and it will only do this if the hz field in the object was zero to begin with (otherwise you end up with a random but usually very large indeed timeout). --- .../TARGET_UBLOX_C030/min_battery_voltage.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F437xG/TARGET_UBLOX_C030/min_battery_voltage.c b/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F437xG/TARGET_UBLOX_C030/min_battery_voltage.c index 396a26483fb..44d77f54592 100644 --- a/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F437xG/TARGET_UBLOX_C030/min_battery_voltage.c +++ b/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F437xG/TARGET_UBLOX_C030/min_battery_voltage.c @@ -27,10 +27,10 @@ void HAL_MspInit(void) void set_minimum_battery_voltage() { - i2c_t i2c_obj; + i2c_t i2c_obj = {0}; int data_read; - i2c_frequency(&i2c_obj, I2C_FREQUENCY); i2c_init(&i2c_obj, I2C_SDA_B, I2C_SCL_B); + i2c_frequency(&i2c_obj, I2C_FREQUENCY); if (read_from_i2c(BQ24295_I2C_ADDRESS, 0, &data_read, i2c_obj)) { data_read = data_read & MIN_BATTERY_VOLTAGE_MASK;