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Merge pull request #273 from KarlK90/gd32vf103-i2c-fix 

[GD32] Fix I2C Hangups
This commit is contained in:
Fabien Poussin 2021-04-16 17:23:13 +02:00 committed by GitHub
parent f8bb6d9332 e9657f6468
commit 9dbe061083
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 10 additions and 13 deletions
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23
os/hal/ports/GD/GD32VF103/I2C/hal_i2c_lld.c
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@ -263,11 +263,8 @@ static void i2c_lld_serve_event_interrupt(I2CDriver *i2cp) {
case I2C_EV6_MASTER_REC_MODE_SELECTED:
dp->CTL1 &= ~I2C_CTL1_EVIE;
/* Clear address flags before dma enable */
if (event & (I2C_STAT0_ADDSEND | I2C_STAT0_ADD10SEND)){
(void)dp->STAT0;
(void)dp->STAT1;
}
dp->CTL1 |= I2C_CTL1_DMAON;
(void)dp->STAT0;
(void)dp->STAT1;
dmaStreamEnable(i2cp->dmarx);
dp->CTL1 |= I2C_CTL1_DMALST; /* Needed in receiver mode. */
if (dmaStreamGetTransactionSize(i2cp->dmarx) < 2)
@ -276,11 +273,8 @@ static void i2c_lld_serve_event_interrupt(I2CDriver *i2cp) {
case I2C_EV6_MASTER_TRA_MODE_SELECTED:
dp->CTL1 &= ~I2C_CTL1_EVIE;
/* Clear address flags before dma enable */
if (event & (I2C_STAT0_ADDSEND | I2C_STAT0_ADD10SEND)){
(void)dp->STAT0;
(void)dp->STAT1;
}
dp->CTL1 |= I2C_CTL1_DMAON;
(void)dp->STAT0;
(void)dp->STAT1;
dmaStreamEnable(i2cp->dmatx);
break;
case I2C_EV8_2_MASTER_BYTE_TRANSMITTED:
@ -303,6 +297,11 @@ static void i2c_lld_serve_event_interrupt(I2CDriver *i2cp) {
(void)dp->STAT0;
(void)dp->STAT1;
}
/* Errata 2.4.6 for STM32F40x, Spurious Bus Error detection in Master mode.*/
if (event & I2C_STAT0_BERR) {
dp->STAT0 &= ~I2C_STAT0_BERR;
}
}
/**
@ -582,9 +581,7 @@ void i2c_lld_start(I2CDriver *i2cp) {
/* Reset i2c peripheral.*/
dp->CTL0 = I2C_CTL0_SRESET;
dp->CTL0 = 0;
dp->CTL1 = 0;
dp->STAT0 = 0;
dp->CTL1 = I2C_CTL1_ERRIE;
dp->CTL1 = I2C_CTL1_ERRIE | I2C_CTL1_DMAON;
/* Setup I2C parameters.*/
i2c_lld_set_clock(i2cp);
i2c_lld_set_opmode(i2cp);