gonzui

mtkernel_3

device/i2c/sysdepend/stm32l4/i2c_stm32l4.c - 11.2KB - 330 lines

102: 
103:         i2c_st = in_w(I2C_ISR(unit));
104:         if( i2c_st & I2C_ISR_NACKF) {
125:         } else if( i2c_st & I2C_ISR_RXNE) {    /* RX interrupt */
126:                 *(p_cb->rbuf++) = (UB)in_w(I2C_RXDR(unit));
127:                 if(--(p_cb->rdat_num) <= 0) {                 /* final data ? */
215:                 case I2C_STS_STOP:
216:                         while(in_w(I2C_ISR(unit)) & I2C_ISR_BUSY) {
217:                                 tk_dly_tsk(1);
308:         UW     ccipr;
309:         ccipr = in_w(RCC_CCIPR) & ~(RCC_CCIPR_I2CSEL << (unit<<1));
310:         out_w(RCC_CCIPR, ccipr |(DEVCNF_I2CSEL << (12 + (unit<<1))));