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mpr121 table init - release

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philippe44
2022-11-19 18:28:33 -08:00
parent f6630fae4e
commit 5df561890c
1 changed files with 29 additions and 84 deletions
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113
components/services/gpio_exp.c
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@@ -511,94 +511,39 @@ static gpio_exp_t* find_expander(gpio_exp_t *expander, int *gpio) {
* MPR121 family : init, direction, read and write * MPR121 family : init, direction, read and write
*/ */
static esp_err_t mpr121_init(gpio_exp_t* self) { static esp_err_t mpr121_init(gpio_exp_t* self) {
// soft reset the MPR121 static const struct {
esp_err_t err = i2c_write(self->phy.port, self->phy.addr, 0x80, 0x63, 1); uint8_t addr;
uint8_t data;
} mpr121_init_table[] = {
{ 0x80, 0x63 }, /* Soft reset */
/* { 0x2b, 0x01 }, { 0x2c, 0x01 }, { 0x2d, 0x10 }, { 0x2e, 0x20 }, /* MHDR, NHDR, NCLR, FDLR */
There is variance of default values between libraries: { 0x2f, 0x01 }, { 0x30, 0x01 }, { 0x31, 0x10 }, { 0x32, 0x20 }, /* MHDF, NHDF, NCLF, FDLF */
Reg AN3944 Adafruit_MPR121 BareConductive/MPR121 { 0x33, 0x01 }, { 0x34, 0x10 }, { 0x35, 0xff }, /* NHDT, NCLT, FDLT */
MHDR 0x2b 0x01 0x01 0x01 { 0x5b, 0x11 }, { 0x5c, 0xff }, { 0x5d, 0x30 }, /* DTR, AFE1, AFE2 */
NHDR 0x2c 0x01 0x01 0x01 { 0x7b, 0x00 }, { 0x7c, 0x00 }, { 0x7d, 0x00 }, { 0x7e, 0x00 }, { 0x7f, 0x00 },/* ACCR0, ACCR1, USL, LSL, TL */
NCLR 0x2d 0x00 0x0e 0x10
FDLR 0x2e 0x00 0x00 0x20
MHDF 0x2f 0x01 0x01 0x01 { 0x41, 0x28 }, { 0x42, 0x14 }, /* ELE0: Touch Threshold, Release Threshold */
NHDF 0x30 0x01 0x05 0x01 { 0x43, 0x28 }, { 0x44, 0x14 }, /* ELE1: Touch Threshold, Release Threshold */
NCLF 0x31 0xff 0x01 0x10 { 0x45, 0x28 }, { 0x46, 0x14 }, /* ELE2: Touch Threshold, Release Threshold */
FDLF 0x32 0x20 0x00 0x20 { 0x47, 0x28 }, { 0x48, 0x14 }, /* ELE3: Touch Threshold, Release Threshold */
{ 0x49, 0x28 }, { 0x4a, 0x14 }, /* ELE4: Touch Threshold, Release Threshold */
{ 0x4b, 0x28 }, { 0x4c, 0x14 }, /* ELE5: Touch Threshold, Release Threshold */
{ 0x4d, 0x28 }, { 0x4e, 0x14 }, /* ELE6: Touch Threshold, Release Threshold */
{ 0x4f, 0x28 }, { 0x50, 0x14 }, /* ELE7: Touch Threshold, Release Threshold */
{ 0x51, 0x28 }, { 0x52, 0x14 }, /* ELE8: Touch Threshold, Release Threshold */
{ 0x53, 0x28 }, { 0x54, 0x14 }, /* ELE9: Touch Threshold, Release Threshold */
{ 0x55, 0x28 }, { 0x56, 0x14 }, /* ELE10: Touch Threshold, Release Threshold */
{ 0x57, 0x28 }, { 0x58, 0x14 }, /* ELE11: Touch Threshold, Release Threshold */
NHDT 0x33 ---- 0x00 0x01 { 0x5e, 0xcc }, /* ECR - must be set last */
NCLT 0x34 ---- 0x00 0x10 {0, 0}
FDLT 0x35 ---- 0x00 0xff };
DTR 0x5b ---- 0x00 0x11 esp_err_t err = 0;
AFE1 0x5c ---- 0x10 0xff for (int i = 0; mpr121_init_table[i].addr; i++) {
AFE2 0x5d 0x04 0x20 0x30 err |= i2c_write(self->phy.port, self->phy.addr, mpr121_init_table[i].addr, mpr121_init_table[i].data, 1);
ECR 0x5e 0x0c ---- 0xcc }
ACCR0 0x7b 0x0b 0x0b 0x00
ACCR1 0x7c ---- ---- 0x00
USL 0x7d 0x9c 0xc8 0x00
LSL 0x7e 0x65 0xb4 0x00
TL 0x7f 0x8c 0x82 0x00
BareConductive MPR121 values used below.
*/
err |= i2c_write(self->phy.port, self->phy.addr, 0x2b, 0x01, 1); // MHDR
err |= i2c_write(self->phy.port, self->phy.addr, 0x2c, 0x01, 1); // NHDR
err |= i2c_write(self->phy.port, self->phy.addr, 0x2d, 0x10, 1); // NCLR
err |= i2c_write(self->phy.port, self->phy.addr, 0x2e, 0x20, 1); // FDLR
err |= i2c_write(self->phy.port, self->phy.addr, 0x2f, 0x01, 1); // MHDF
err |= i2c_write(self->phy.port, self->phy.addr, 0x30, 0x01, 1); // NHDF
err |= i2c_write(self->phy.port, self->phy.addr, 0x31, 0x10, 1); // NCLF
err |= i2c_write(self->phy.port, self->phy.addr, 0x32, 0x20, 1); // FDLF
err |= i2c_write(self->phy.port, self->phy.addr, 0x33, 0x01, 1); // NHDT
err |= i2c_write(self->phy.port, self->phy.addr, 0x34, 0x10, 1); // NCLT
err |= i2c_write(self->phy.port, self->phy.addr, 0x35, 0xff, 1); // FDLT
err |= i2c_write(self->phy.port, self->phy.addr, 0x5b, 0x11, 1); // DTR
err |= i2c_write(self->phy.port, self->phy.addr, 0x5c, 0xff, 1); // AFE1
err |= i2c_write(self->phy.port, self->phy.addr, 0x5d, 0x30, 1); // AFE2
// ECR set last
err |= i2c_write(self->phy.port, self->phy.addr, 0x7b, 0x00, 1); // ACCR0
err |= i2c_write(self->phy.port, self->phy.addr, 0x7c, 0x00, 1); // ACCR1
err |= i2c_write(self->phy.port, self->phy.addr, 0x7d, 0x00, 1); // USL
err |= i2c_write(self->phy.port, self->phy.addr, 0x7e, 0x00, 1); // LSL
err |= i2c_write(self->phy.port, self->phy.addr, 0x7f, 0x00, 1); // TL
// Touch & Release thresholds
err |= i2c_write(self->phy.port, self->phy.addr, 0x41, 0x28, 1); // ELE0 Touch Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x42, 0x14, 1); // ELE0 Release Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x43, 0x28, 1); // ELE1 Touch Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x44, 0x14, 1); // ELE1 Release Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x45, 0x28, 1); // ELE2 Touch Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x46, 0x14, 1); // ELE2 Release Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x47, 0x28, 1); // ELE3 Touch Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x48, 0x14, 1); // ELE3 Release Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x49, 0x28, 1); // ELE4 Touch Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x4a, 0x14, 1); // ELE4 Release Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x4b, 0x28, 1); // ELE5 Touch Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x4c, 0x14, 1); // ELE5 Release Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x4d, 0x28, 1); // ELE6 Touch Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x4e, 0x14, 1); // ELE6 Release Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x4f, 0x28, 1); // ELE7 Touch Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x50, 0x14, 1); // ELE7 Release Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x51, 0x28, 1); // ELE8 Touch Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x52, 0x14, 1); // ELE8 Release Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x53, 0x28, 1); // ELE9 Touch Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x54, 0x14, 1); // ELE9 Release Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x55, 0x28, 1); // ELE10 Touch Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x56, 0x14, 1); // ELE10 Release Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x57, 0x28, 1); // ELE11 Touch Threshold
err |= i2c_write(self->phy.port, self->phy.addr, 0x58, 0x14, 1); // ELE11 Release Threshold
// finally set to run mode with 12 electrodes enabled
err |= i2c_write(self->phy.port, self->phy.addr, 0x5e, 0xcc, 1); // ECR
return err; return err;
} }