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comparison ds1307.c @ 61:0910ab6f0095

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Add attribution for IIC routines.
author darius@Inchoate
date Thu, 30 Oct 2008 20:05:36 +1030
parents 50fca9562310
children 1ef17cd8af7a
comparison
equal deleted inserted replaced
60:50fca9562310 61:0910ab6f0095
70 * IIC_STFAIL Could generate START condition (broken bus or busy). 70 * IIC_STFAIL Could generate START condition (broken bus or busy).
71 * IIC_FAILARB Failed bus arbitration. 71 * IIC_FAILARB Failed bus arbitration.
72 * IIC_SLNAK Slave NAK'd. 72 * IIC_SLNAK Slave NAK'd.
73 * IIC_NOREPLY No reply (no such slave?) 73 * IIC_NOREPLY No reply (no such slave?)
74 * IIC_UNKNOWN Unexpected return from TWI reg. 74 * IIC_UNKNOWN Unexpected return from TWI reg.
75 *
76 * Heaviy cribbed from twitest.c by Joerg Wunsch
75 */ 77 */
76 int 78 int
77 iic_read(uint8_t *data, uint8_t len, uint8_t adr, uint8_t sla) { 79 iic_read(uint8_t *data, uint8_t len, uint8_t adr, uint8_t sla) {
78 uint8_t twst, twcr, cnt; 80 uint8_t twst, twcr, cnt;
79 81
251 * IIC_STFAIL Could generate START condition (broken bus or busy). 253 * IIC_STFAIL Could generate START condition (broken bus or busy).
252 * IIC_FAILARB Failed bus arbitration. 254 * IIC_FAILARB Failed bus arbitration.
253 * IIC_SLNAK Slave NAK'd. 255 * IIC_SLNAK Slave NAK'd.
254 * IIC_NOREPLY No reply (no such slave?) 256 * IIC_NOREPLY No reply (no such slave?)
255 * IIC_UNKNOWN Unexpected return from TWI reg. 257 * IIC_UNKNOWN Unexpected return from TWI reg.
258 *
259 * Heaviy cribbed from twitest.c by Joerg Wunsch
256 */ 260 */
257 int 261 int
258 iic_write(uint8_t *data, uint8_t len, uint8_t adr, uint8_t sla) { 262 iic_write(uint8_t *data, uint8_t len, uint8_t adr, uint8_t sla) {
259 uint8_t twst, cnt; 263 uint8_t twst, cnt;
260 264