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Reduce intterupt frequency

This commit is contained in:
Hanya 2022-02-15 19:02:36 +09:00
parent 52c619778f
commit a1850c6a33
1 changed files with 6 additions and 4 deletions
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2
os/hal/ports/RP/LLD/I2Cv1/hal_i2c_lld.c
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@ -118,10 +118,12 @@ static void serve_interrupt(I2CDriver *i2cp) {
/* Transmission phase. */ /* Transmission phase. */
if (dp->INTRSTAT & I2C_IC_INTR_STAT_R_TX_EMPTY_Msk) { if (dp->INTRSTAT & I2C_IC_INTR_STAT_R_TX_EMPTY_Msk) {
if (i2cp->txbytes) { if (i2cp->txbytes) {
while (i2cp->txbytes && (dp->TXFLR & I2C_IC_TXFLR_TXFLR_Msk) < 16) {
dp->DATACMD = (uint32_t)i2cp->txbuf[i2cp->txindex] | dp->DATACMD = (uint32_t)i2cp->txbuf[i2cp->txindex] |
(i2cp->txbytes == 1 ? I2C_IC_DATA_CMD_STOP : 0); (i2cp->txbytes == 1 ? I2C_IC_DATA_CMD_STOP : 0);
i2cp->txindex++; i2cp->txindex++;
i2cp->txbytes--; i2cp->txbytes--;
}
if (i2cp->txbytes == 0U) { if (i2cp->txbytes == 0U) {
// Disable TX_EMPTY irq // Disable TX_EMPTY irq