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Fix for counter overflow in delays based on sdk_system_get_time()

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This commit is contained in:
UncleRus 2017-04-21 17:53:13 +05:00
parent b3f658bdbf
commit 55e08de21c
3 changed files with 23 additions and 16 deletions
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6
extras/hmc5883l/hmc5883l.c
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@ -38,6 +38,8 @@
#define MEASUREMENT_TIMEOUT 6000
#define timeout_expired(start, len) ((uint32_t)(sdk_system_get_time() - (start)) >= (len))
static const float gain_values [] = {
[HMC5883L_GAIN_1370] = 0.73,
[HMC5883L_GAIN_1090] = 0.92,
@ -156,10 +158,10 @@ bool hmc5883l_get_raw_data(hmc5883l_raw_data_t *data)
// overwrite mode register for measurement
hmc5883l_set_operating_mode(current_mode);
// wait for data
uint32_t timeout = sdk_system_get_time() + MEASUREMENT_TIMEOUT;
uint32_t start = sdk_system_get_time();
while (!hmc5883l_data_is_ready())
{
if (sdk_system_get_time() >= timeout)
if (timeout_expired(start, MEASUREMENT_TIMEOUT))
return false;
}
}