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-rw-r--r--src/lpc176x/i2c.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/lpc176x/i2c.c b/src/lpc176x/i2c.c
index 10b45ede..4d8dc361 100644
--- a/src/lpc176x/i2c.c
+++ b/src/lpc176x/i2c.c
@@ -1,6 +1,6 @@
// I2C functions on lpc176x
//
-// Copyright (C) 2018 Kevin O'Connor <kevin@koconnor.net>
+// Copyright (C) 2018-2021 Kevin O'Connor <kevin@koconnor.net>
//
// This file may be distributed under the terms of the GNU GPLv3 license.
@@ -54,7 +54,8 @@ i2c_setup(uint32_t bus, uint32_t rate, uint8_t addr)
// Set 100Khz frequency
enable_pclock(info->pclk);
- uint32_t pclk = SystemCoreClock, pulse = pclk / (100000 * 2);
+ uint32_t pclk = get_pclock_frequency(info->pclk);
+ uint32_t pulse = pclk / (100000 * 2);
i2c->I2SCLL = pulse;
i2c->I2SCLH = pulse;