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cc26x0: enable serial domain only once

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Signed-off-by: Jean Pierre Dudey <jeandudey@hotmail.com>
This commit is contained in:
Jean Pierre Dudey 2020-03-13 01:27:35 -05:00
parent 4643ed5733
commit 7ac28c82b1
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GPG Key ID: 631A70D74E41F1AD
2 changed files with 6 additions and 4 deletions
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2
cpu/cc26x0/Makefile.dep
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@ -1 +1,3 @@
USEMODULE += cc26xx_cc13xx
include ${RIOTCPU}/cc26xx_cc13xx/Makefile.dep

8
cpu/cc26x0/periph/i2c.c
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@ -95,13 +95,13 @@ void i2c_init(i2c_t devnum)
assert(devnum < I2C_NUMOF);
/* Make sure everything is shut off in case of reinit */
PRCM->PDCTL0SERIAL = 0;
I2C->MCR = 0;
PRCM->I2CCLKGR = 0;
/* enable SERIAL power domain */
PRCM->PDCTL0SERIAL = 1;
while (!(PRCM->PDSTAT0 & PDSTAT0_SERIAL_ON)) {}
/* Enable serial power domain */
if (!power_is_domain_enabled(POWER_DOMAIN_SERIAL)) {
power_enable_domain(POWER_DOMAIN_SERIAL);
}
/* enable i2c clock in run mode */
PRCM->I2CCLKGR = 1;